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Sjoberg HT, Philippou Y, Magnussen AL, Tullis IDC, Bridges E, Chatrian A, Lefebvre J, Tam KH, Murphy EA, Rittscher J, Preise D, Agemy L, Yechezkel T, Smart SC, Kinchesh P, Gilchrist S, Allen DP, Scheiblin DA, Lockett SJ, Wink DA, Lamb AD, Mills IG, Harris A, Muschel RJ, Vojnovic B, Scherz A, Hamdy FC, Bryant RJ. Tumour irradiation combined with vascular-targeted photodynamic therapy enhances antitumour effects in pre-clinical prostate cancer. Br J Cancer 2021; 125:534-546. [PMID: 34155340 PMCID: PMC8367986 DOI: 10.1038/s41416-021-01450-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/29/2021] [Accepted: 05/25/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND There is a need to improve the treatment of prostate cancer (PCa) and reduce treatment side effects. Vascular-targeted photodynamic therapy (VTP) is a focal therapy for low-risk low-volume localised PCa, which rapidly disrupts targeted tumour vessels. There is interest in expanding the use of VTP to higher-risk disease. Tumour vasculature is characterised by vessel immaturity, increased permeability, aberrant branching and inefficient flow. FRT alters the tumour microenvironment and promotes transient 'vascular normalisation'. We hypothesised that multimodality therapy combining fractionated radiotherapy (FRT) and VTP could improve PCa tumour control compared against monotherapy with FRT or VTP. METHODS We investigated whether sequential delivery of FRT followed by VTP 7 days later improves flank TRAMP-C1 PCa tumour allograft control compared to monotherapy with FRT or VTP. RESULTS FRT induced 'vascular normalisation' changes in PCa flank tumour allografts, improving vascular function as demonstrated using dynamic contrast-enhanced magnetic resonance imaging. FRT followed by VTP significantly delayed tumour growth in flank PCa allograft pre-clinical models, compared with monotherapy with FRT or VTP, and improved overall survival. CONCLUSION Combining FRT and VTP may be a promising multimodal approach in PCa therapy. This provides proof-of-concept for this multimodality treatment to inform early phase clinical trials.
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Affiliation(s)
- Hanna T Sjoberg
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | | | - Anette L Magnussen
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | | | - Esther Bridges
- Department of Oncology, University of Oxford, Oxford, UK
| | - Andrea Chatrian
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
| | - Joel Lefebvre
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
| | - Ka Ho Tam
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
| | - Emma A Murphy
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
- Department of Oncology, University of Oxford, Oxford, UK
| | - Jens Rittscher
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
- Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Target Discovery Institute, NDM Research Building, University of Oxford, Headington, UK
| | - Dina Preise
- Department of Core Facilities, The Weizmann Institute of Science, Rehovot, Israel
| | - Lilach Agemy
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Tamar Yechezkel
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Sean C Smart
- Department of Oncology, University of Oxford, Oxford, UK
| | - Paul Kinchesh
- Department of Oncology, University of Oxford, Oxford, UK
| | | | - Danny P Allen
- Department of Oncology, University of Oxford, Oxford, UK
| | - David A Scheiblin
- Optical Microscopy and Analysis Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc. for the National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Stephen J Lockett
- Optical Microscopy and Analysis Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc. for the National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - David A Wink
- Cancer and Inflammation Program, Centre for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Alastair D Lamb
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Ian G Mills
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Adrian Harris
- Department of Oncology, University of Oxford, Oxford, UK
| | - Ruth J Muschel
- Department of Oncology, University of Oxford, Oxford, UK
| | - Boris Vojnovic
- Department of Oncology, University of Oxford, Oxford, UK
| | - Avigdor Scherz
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Freddie C Hamdy
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Richard J Bryant
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
- Department of Oncology, University of Oxford, Oxford, UK.
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Corroyer-Dulmont A, Falzone N, Kersemans V, Thompson J, Allen DP, Able S, Kartsonaki C, Malcolm J, Kinchesh P, Hill MA, Vojnovic B, Smart SC, Gaze MN, Vallis KA. Improved outcome of 131I-mIBG treatment through combination with external beam radiotherapy in the SK-N-SH mouse model of neuroblastoma. Radiother Oncol 2017; 124:488-495. [PMID: 28595752 PMCID: PMC5636618 DOI: 10.1016/j.radonc.2017.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 05/03/2017] [Accepted: 05/04/2017] [Indexed: 12/03/2022]
Abstract
PURPOSE To assess the efficacy of different schedules for combining external beam radiotherapy (EBRT) with molecular radiotherapy (MRT) using 131I-mIBG in the management of neuroblastoma. MATERIALS AND METHODS BALB/c nu/nu mice bearing SK-N-SH neuroblastoma xenografts were assigned to five treatment groups: 131I-mIBG 24h after EBRT, EBRT 6days after 131I-mIBG, EBRT alone, 131I-mIBG alone and control (untreated). A total of 56 mice were assigned to 3 studies. Study 1: Vessel permeability was evaluated using dynamic contrast-enhanced (DCE)-MRI (n=3). Study 2: Tumour uptake of 131I-mIBG in excised lesions was evaluated by γ-counting and autoradiography (n=28). Study 3: Tumour volume was assessed by longitudinal MR imaging and survival was analysed (n=25). Tumour dosimetry was performed using Monte Carlo simulations of absorbed fractions with the radiation transport code PENELOPE. RESULTS Given alone, both 131I-mIBG and EBRT resulted in a seven-day delay in tumour regrowth. Following EBRT, vessel permeability was evaluated by DCE-MRI and showed an increase at 24h post irradiation that correlated with an increase in 131I-mIBG tumour uptake, absorbed dose and overall survival in the case of combined treatment. Similarly, EBRT administered seven days after MRT to coincide with tumour regrowth, significantly decreased the tumour volume and increased overall survival. CONCLUSIONS This study demonstrates that combining EBRT and MRT has an enhanced therapeutic effect and emphasizes the importance of treatment scheduling according to pathophysiological criteria such as tumour vessel permeability and tumour growth kinetics.
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Affiliation(s)
| | - Nadia Falzone
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - Veerle Kersemans
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - James Thompson
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - Danny P Allen
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - Sarah Able
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | | | - Javian Malcolm
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - Paul Kinchesh
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - Mark A Hill
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - Boris Vojnovic
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - Sean C Smart
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK
| | - Mark N Gaze
- University College London Hospitals NHS Foundation Trust, London, UK
| | - Katherine A Vallis
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, Oxford University, UK.
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Allen DP, Playfer JR, Aly NM, Duffey P, Heald A, Smith SL, Halliday DM. On the Use of Low-Cost Computer Peripherals for the Assessment of Motor Dysfunction in Parkinson's Disease Quantification of Bradykinesia Using Target Tracking Tasks. IEEE Trans Neural Syst Rehabil Eng 2007; 15:286-94. [PMID: 17601199 DOI: 10.1109/tnsre.2007.897020] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The potential of computer games peripherals to measure the motor dysfunction in Parkinson's diseases is assessed. Of particular interest is the quantification of bradykinesia. Previous studies used modified or custom haptic interfaces, here an unmodified force feedback joystick and steering wheel are used with a laptop. During testing an on screen cursor moves in response to movements of the peripheral, the user has to track a continuously moving target (pursuit tracking), or move to a predetermined target (step tracking). All tasks use movement in the horizontal axis, allowing use of joystick or steering wheel. Two pursuit tracking tasks are evaluated, pseudo random movement, and a swept frequency task. Two step tracking tasks are evaluated, movement between two or between two of five fixed targets. Thirteen patients and five controls took part on a weekly basis. Patients were assessed for bradykinesia at each session using standard clinical measures. A range of quantitative measures was developed to allow comparison between and within patients and controls using analysis of variance (ANOVA). Both peripherals are capable of discriminating between controls and patients, and between patients with different levels of bradykinesia. Recommendations for test procedures and peripherals are given.
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Affiliation(s)
- D P Allen
- Department of Electronics, University of York, York Y017 IBJ, UK
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Abstract
Concurrent renal adenocarcinoma and polycythemia were diagnosed in a 19-month-old, female Rhodesian ridgeback. An unusually early presentation for this neoplasm, it is the second reported case of renal adenocarcinoma in a dog less than two years of age. Concurrent renal adenocarcinoma and polycythemia have been reported previously in four older dogs. In the dog of this report, clinical signs included brick-red mucous membranes, lethargy, a periodic systolic heart murmur, and engorged retinal vessels. A large retroperitoneal mass and pulmonary metastatic nodules were present at the time of diagnosis. Red blood cell count, packed cell volume, and hemoglobin concentration were greatly increased (12,940,000 red blood cells/microliter; 73.2%; and 26.6 g/dl, respectively). Histopathological diagnosis was renal adenocarcinoma. Polycythemia was the result of excessive erythropoietin production by the neoplasm.
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Affiliation(s)
- S E Crow
- Sacramento Animal Medical Group, Carmichael, California 95608
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Abstract
Band 3 protein is the major anion transport protein of the erythrocyte cell membrane where it catalyzes the exchange of HCO3- for Cl-. There is evidence that band 3 protein is present in the collecting duct of both the rat and rabbit kidney. We used colloidal-gold immunocytochemistry to determine the ultrastructural location of band 3 protein in the rat cortical (CCD) and outer medullary collecting ducts (OMCD). Kidneys of normal Sprague-Dawley rats were fixed by intravascular perfusion with 1% glutaraldehyde and embedded in Lowicryl K4M. Two polyclonal antibodies raised in rabbits were used as the primary antibody in separate experiments, one against the 43-kDa fragment of the cytoplasmic domain of human erythrocyte band 3 protein and the other against rat erythrocyte band 3 protein. This was followed by exposure to gold-conjugated goat anti-rabbit immunoglobulin G. Transmission electron microscopy revealed gold particles along the basal and lateral plasma membranes of all intercalated cells of the OMCD. In the CCD, the basal and lateral plasma membranes of the type A intercalated cells only were labeled with gold particles. The type B intercalated cells and principal cells were devoid of gold particles, as were all cells of the proximal tubule, the distal convoluted tubule, and the thick ascending limb of the loop of Henle. We conclude that a Cl(-)-HCO3- transporter is present in the basal and lateral plasma membranes of the intercalated cells in the OMCD and the type A intercalated cells in the CCD. These findings provide further evidence that these intercalated cells are involved in H+ secretion in the OMCD and CCD of the rat. We have no evidence for the presence of band 3 protein in the type B intercalated cells of the CCD, which supports the hypothesis that type B cells are functionally and structurally distinct from type A cells.
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Affiliation(s)
- J W Verlander
- Laboratory of Experimental Morphology, University of Florida College of Medicine, Gainesville 32610
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Allen DP, Low PS, Dola A, Maisel H. Band 3 and ankyrin homologues are present in eye lens: evidence for all major erythrocyte membrane components in same non-erythroid cell. Biochem Biophys Res Commun 1987; 149:266-75. [PMID: 2961337 DOI: 10.1016/0006-291x(87)91634-2] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Although immunological homologues of erythrocyte membrane proteins have been individually discovered in a wide variety of tissues and cultured cells, the major structural components of the membrane have not yet been demonstrated simultaneously in the same cell type. Thus, considerable uncertainty continues to exist concerning whether the red cell homologues form elements of a structure which is similar to or unique from the framework which supports the erythrocyte membrane. Because the red cell cytoskeletal proteins, spectrin, actin and band 4.1, have been previously found in the superficial cortex of the lens, we decided to determine whether the corresponding membrane anchoring components of band 3 and ankyrin also occur in this cell type. Using antiserum specific for band 3 and ankyrin, we report the existence of immunologically cross-reactive proteins of similar molecular weight. Because these anchoring proteins appear and disappear coordinately with the aforementioned cytoskeletal proteins during the intermediate stages of lens cell maturation, it is conceivable that an erythrocyte-like membrane structural organization may occur transiently in the eye lens.
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Affiliation(s)
- D P Allen
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
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Mendillo M, Baumgardner J, Allen DP, Foster J, Holt J, Ellis GR, Klekociuk A, Reber G. Spacelab-2 Plasma Depletion Experiments for Ionospheric and Radio Astronomical Studies. Science 1987; 238:1260-4. [PMID: 17744364 DOI: 10.1126/science.238.4831.1260] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The Spacelab-2 Plasma Depletion Experiments were a series of studies to examine shuttle-induced perturbations in the ionosphere and their application to ground-based radio astronomy. The space shuttle Challenger fired its orbital maneuvering subsystem engines on 30 July and 5 August 1985, releasing large amounts of exhaust molecules (water, hydrogen, and carbon dioxide) that caused the electrons and ions in Earth's upper atmosphere to chemically recombine, thereby creating so-called "ionospheric holes." Two burns conducted over New England produced ionospheric peak depletions ranging from 25 to 50 percent, affected the ionosphere over a 200-kilometer altitude range, and covered 1 degrees to 2 degrees of latitude. Optical emissions associated with the hole spanned an area of several hundred thousand square kilometers. A third burn was conducted over a low-frequency radio observatory in Hobart, Australia, to create an "artificial window" for ground-based observations at frequencies normally below the natural ionospheric cutoff (penetration) frequency. The Hobart experiment succeeded in making high-resolution observations at 1.7 megahertz through the induced ionospheric hole.
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Low PS, Allen DP, Zioncheck TF, Chari P, Willardson BM, Geahlen RL, Harrison ML. Tyrosine phosphorylation of band 3 inhibits peripheral protein binding. J Biol Chem 1987; 262:4592-6. [PMID: 3558357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The cytoplasmic domain of band 3 (cdb3) of the human erythrocyte membrane is a good substrate of endogenous and exogenous protein-tyrosine kinases. Because one site of tyrosine phosphorylation is within the glycolytic enzyme/hemoglobin-binding region at the N terminus of the polypeptide, we have investigated whether tyrosine phosphorylation of cdb3 might influence its interaction with the above peripheral proteins. Using p40, a protein-tyrosine kinase isolated from bovine thymus, we demonstrate that aldolase binding to cdb3 linked to Affi-Gel 15 is significantly inhibited by phosphorylation of the immobilized band 3. Importantly, upon dephosphorylation of the gel with acid phosphatase, aldolase binding returns to prephosphorylated values. Similarly, cdb3 phosphorylation was found to inhibit glyceraldehyde-3-phosphate dehydrogenase, phosphofructokinase, and hemoglobin binding to immobilized cdb3. In the converse experiment, untreated soluble cdb3 was shown to bind to immobilized aldolase, whereas phosphorylated cdb3 (approximately equal to 1.8 mol of Pi/mol of cdb3) did not. Furthermore, phosphorylated cdb3 was unable to inhibit aldolase catalysis, whereas untreated cdb3, as shown previously by others, was a potent inhibitor. Taken together, these results demonstrate that phosphorylation of cdb3 on tyrosine residues inhibits peripheral protein binding at the polypeptide's N terminus. In view of the known effect of glycolytic enzyme binding to band 3 on catalytic activity, tyrosine phosphorylation of band 3 may modulate glycolysis in vivo.
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Drenckhahn D, Schlüter K, Allen DP, Bennett V. Colocalization of band 3 with ankyrin and spectrin at the basal membrane of intercalated cells in the rat kidney. Science 1985; 230:1287-9. [PMID: 2933809 DOI: 10.1126/science.2933809] [Citation(s) in RCA: 224] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An immunoreactive form of the anion channel protein of erythrocytes, band 3, has been identified in the rat kidney. It is found in the intercalated cells of the distal tubule and collecting ducts. Immunostaining specific for band 3 is confined to the basolateral plasma membrane of these cells, where this protein probably mediates the transport of bicarbonate across the tubular wall. Double-immunolabeling studies demonstrate that band 3 is colocalized with immunoreactive forms of ankyrin and spectrin along the basolateral plasma membrane. The polarized distribution of band 3 may be the result of the association of its cytoplasmic domain with ankyrin, which in turn links band 3 to spectrin and the cytoskeleton. These observations help to explain how the collecting ducts of the kidney can direct the transport of bicarbonate ions, thus maintaining the acid-base balance.
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Low PS, Westfall MA, Allen DP, Appell KC. Characterization of the reversible conformational equilibrium of the cytoplasmic domain of erythrocyte membrane band 3. J Biol Chem 1984; 259:13070-6. [PMID: 6490646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The cytoplasmic domain of the erythrocyte membrane protein, band 3, contains binding sites for hemoglobin, several glycolytic enzymes, and ankyrin, the linkage to the cytoskeleton. In an earlier study, we found evidence which suggested that band 3 might undergo a native conformational change. We demonstrate here that the cytoplasmic domain of band 3 does exist in a reversible, pH-dependent conformational equilibrium among 3 native states. At physiological salt concentrations this equilibrium is characterized by apparent pKa values of 7.2 and 9.2; however, these apparent pKa values change if the domain's sulfhydryl groups are modified. A major component of the structural change appears to involve the pivoting of two subdomains of the cytoplasmic domain at a central hinge, as evidenced by both hydrodynamic and fluorescence energy transfer measurements. The probable site of this hinge is between residues 176 and 191, a region highly accessible to proteases and also rich in proline. These structural rearrangements also apparently extend to the cluster of tryptophan residues near the N terminus, since the domain's intrinsic fluorescence more than doubles between pH 6.5 and 9.5. No measurable change in band 3 secondary or quaternary structure could be detected during the conformational transitions. A structural model of the cytoplasmic domain of band 3 is presented to show the possible spatial relationships between the regions of conformational change and the sites of peripheral protein binding.
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Allen DP. CASE OF AN HERMAPHRODITE. Ann Surg 1905; 42:901-902.1. [PMID: 17861724 PMCID: PMC1426077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
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Allen DP. VII. Sterilized Water for Operating Rooms. Ann Surg 1899; 30:501-4. [PMID: 17860763 PMCID: PMC1427316 DOI: 10.1097/00000658-189907000-00040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Allen DP. VII. Removal of a Thyroid Sarcoma under Cocaine Anaesthesia. Ann Surg 1897; 25:720-6. [PMID: 17860445 PMCID: PMC1425349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
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