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Abstract
OBJECTIVE To investigate the impact of age and inferred prior vaccination history on the persistence of vaccine-induced antibody against rabies in horses. DESIGN Serologic response evaluation. ANIMALS 48 horses with an undocumented vaccination history. PROCEDURES Horses were vaccinated against rabies once. Blood samples were collected prior to vaccination, 3 to 7 weeks after vaccination, and at 6-month intervals for 2 to 3 years. Serum rabies virus-neutralizing antibody (RVNA) values were measured. An RVNA value of ≥ 0.5 U/mL was used to define a predicted protective immune response on the basis of World Health Organization recommendations for humans. Values were compared between horses < 20 and ≥ 20 years of age and between horses inferred to have been previously vaccinated and those inferred to be immunologically naïve. RESULTS A protective RVNA value (≥ 0.5 U/mL) was maintained for 2 to 3 years in horses inferred to have been previously vaccinated on the basis of prevaccination RVNA values. No significant difference was evident in response to rabies vaccination or duration of protective RVNA values between horses < 20 and ≥ 20 years of age. Seven horses were poor responders to vaccination. Significant differences were identified between horses inferred to have been previously vaccinated and horses inferred to be naïve prior to the study. CONCLUSIONS AND CLINICAL RELEVANCE A rabies vaccination interval > 1 year may be appropriate for previously vaccinated horses but not for horses vaccinated only once. Additional research is required to confirm this finding and characterize the optimal primary dose series for rabies vaccination.
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Sialoendoscopy as a treatment for an obstructed mandibular salivary duct in a horse. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2016; 57:869-872. [PMID: 27493288 PMCID: PMC4944566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A 14-year-old Quarter Horse was examined for a draining tract of 8 months' duration on the right mandible that was non-responsive to antibiotic therapy and surgical therapy. Further investigation and subsequent treatment with sialoendoscopy and ultrasonography were performed to relieve an obstruction of plant awns in the mandibular salivary duct.
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The effect of lateral heel studs on the kinematics of the equine digit while cantering on grass. Vet J 2012; 192:217-21. [DOI: 10.1016/j.tvjl.2011.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Revised: 06/07/2011] [Accepted: 06/07/2011] [Indexed: 01/15/2023]
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Impaired control of the tissue factor pathway of blood coagulation in systemic lupus erythematosus. Lupus 2011; 20:1474-83. [DOI: 10.1177/0961203311418267] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Thrombosis is a frequent manifestation in patients with systemic lupus erythematosus (SLE), although precise mechanisms remain unclear. This study investigated whether the major physiological trigger of blood coagulation, the tissue factor (TF) pathway, was altered in SLE patients. Furthermore, we investigated potential associations between the TF pathway, the presence of antiphospholipid (APL) antibodies and other abnormalities present in SLE. A total of 101 participants (40 SLE patients and 61 age- and sex-matched controls) were recruited from Tasmania, Australia. Markers of the TF pathway, hypercoagulability, inflammation and endothelial cell damage were measured in plasma. Serum levels of APL antibodies (anti-cardiolipin antibodies [ACL], lupus anticoagulants [LAC], anti-beta2-glycoprotein-1 [anti-β2GP1] and anti-prothrombin antibodies) were also determined. Despite similar TF and TF pathway inhibitor (TFPI) total antigen levels, SLE patients had significantly increased levels of TFPI free antigen (patients vs controls; mean ± SD) (11.6 ± 0.9 ng/mL vs 6.4 ± 0.4 ng/mL; p < 0.001) but significantly reduced TFPI activity (0.66 ± 0.07 U/mL vs 1.22 ± 0.03 U/mL; p < 0.001), compared with healthy controls. Anti-TFPI activity, designated as the ability of isolated IgG fractions to inhibit TFPI activity in normal plasma, was detected in 19/40 (47.5%) of SLE patients and 3/40 (7.5%) of healthy controls. The significant reduction in TFPI activity in SLE patients reflects impaired functional control of the TF pathway. Moreover, SLE patients with a history of thrombosis demonstrated higher levels of TFPI activity compared with patients without a previous thrombotic event (0.97 ± 0.07 U/mL vs 0.53 ± 0.14 U/mL; p = 0.0026). Changes to the TF pathway were not associated with manifestations of SLE such as inflammation or endothelial cell damage. The results from this study suggest hypercoagulability in SLE may (in part) be due to reduced TFPI activity, a mechanism that appears to be independent of other abnormalities in SLE.
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OBSERVATIONS ON THE NATURE OF MYASTHENIA GRAVIS. THE EFFECT OF THYMECTOMY ON NEURO-MUSCULAR TRANSMISSION. J Clin Invest 2006; 21:579-88. [PMID: 16694948 PMCID: PMC435176 DOI: 10.1172/jci101336] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Abstract
The aim of this study was to determine whether changes in body position alter feline electrocardiographic parameters. Forty-seven cats referred to the Feline Unit of the University of Bristol had electrocardiograms (ECGs) recorded. Only cats presenting in sinus rhythm were included in the study (n = 41). ECGs were recorded either as part of the investigation for potential cardiac disease (n = 38) or as a preanesthetic screen (n = 3). Standard 6-lead ECGs (leads I, II, III, aVR, aVL, and aVF) were recorded in 3 different recumbent positions in the 41 cats. Recordings were 1st made in right lateral (RL) recumbency, followed by sternal (ST) and then left lateral (LL) recumbency. Measurements were taken of the amplitude and duration of P waves and QRS complexes and duration of PQ and QT intervals from lead II was taken in the 3 different positions. Mean electrical axis (MEA) also was calculated. Repeated measures analysis of variance was performed and identified a significant difference in R wave amplitudes (P = .009) and MEA (P = .037) among the 3 different body positions. Two-tailed paired t-tests demonstrated that the R wave amplitude differed significantly both in ST (P = .025) and LL recumbency (P = .009). The mean R wave amplitude was reduced in both ST and LL recumbency when compared with RL recumbency. The MEA only was significantly different in LL recumbency (P = .037). ST and LL recumbencies should not be used for recording ECGs in cats if amplitudes and MEA are to be compared with standard references.
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Abstract
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a disease characterised by infiltration of the myocardium by adipose and fibrous tissue. The disease is an important cause of sudden death in humans, but has rarely been described in animals. This report describes ARVC in two cats with right-sided congestive heart failure. One cat had also experienced previous episodes of syncope. Standard six-lead and 24-hour (Holter) electrocardiogram recording revealed complete atrioventricular block and multiform ventricular ectopics in both cats, with the addition of ventricular tachycardia, ventricular bigeminy and R-on-T phenomenon in one of them. On echocardiography, the right ventricle and atrium were massively dilated and hypokinetic. The survival times of the cats were three days and 16 days following diagnosis. Histopathology in one case revealed fibro-fatty infiltration of the myocardium, predominantly affecting the right ventricular free wall.
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Alfred Blalock: April 5, 1899-September 15, 1964. BIOGRAPHICAL MEMOIRS. NATIONAL ACADEMY OF SCIENCES (U.S.) 2001; 53:49-81. [PMID: 11620795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Inadvertent dural tap related to problems with a loss of resistance device. Anaesthesia 1997; 52:1117-8. [PMID: 9404184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Control of non-pain symptoms in HIV/AIDS. J Back Musculoskelet Rehabil 1997; 8:243-6. [PMID: 24572826 DOI: 10.3233/bmr-1997-8310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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W. Horsley Gantt--a legend in his time. INTEGRATIVE PHYSIOLOGICAL AND BEHAVIORAL SCIENCE : THE OFFICIAL JOURNAL OF THE PAVLOVIAN SOCIETY 1995; 30:237-43. [PMID: 7577686 DOI: 10.1007/bf02698578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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A Century of Biomedical Science at Johns Hopkins: an interview with Dr. A. McGehee Harvey about this historic publication. Interview by Victor R. Hrehorovich and Kelly White. MARYLAND MEDICAL JOURNAL (BALTIMORE, MD. : 1985) 1993; 42:471-6. [PMID: 8336534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Research achievements at the Johns Hopkins School of Medicine over the past century are too numerous to document in anything but a catalog. But a group of Hopkins physicians and researchers compiled a representative sample of papers documenting the intellectual history of the institution, reproducing them in a two-volume text. A discussion with one of the editors, A. McGehee Harvey, M.D., offers some insight into the process of selecting papers to be included in this historic publication.
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A model of its kind. A century of medicine at Johns Hopkins. JAMA 1989; 261:3136-42. [PMID: 2654433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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It happened on the way to the centennial. TRANSACTIONS OF THE AMERICAN CLINICAL AND CLIMATOLOGICAL ASSOCIATION 1985; 96:14-23. [PMID: 6399643 PMCID: PMC2279638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Cecil James Watson. TRANSACTIONS OF THE AMERICAN CLINICAL AND CLIMATOLOGICAL ASSOCIATION 1984; 95:xxxvi-xxxix. [PMID: 6382743 PMCID: PMC2279610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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P22 antirepressor protein prevents in vivo recA-dependent proteolysis of P22 repressor. MOLECULAR & GENERAL GENETICS : MGG 1983; 190:427-31. [PMID: 6348481 DOI: 10.1007/bf00331072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A method was developed to demonstrate recA-dependent P22-repressor breakdown in vivo by SDS-polyacrylamide electrophoresis of unfractionated extracts of phage-infected, lysogenic Salmonella typhimurium strains TA1530 rec+ and TA1530 recA1-. The antirepressor of P22 is not cleaved by recA protein. Under conditions of unregulated ant-overproduction (Harvey et al. 1981) antirepressor protects c2-repressor in vivo against proteolytic cleavage by recA protein.
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Orthopaedic surgery at Johns Hopkins: a heritage of excellence in clinical practice, training and research. THE JOHNS HOPKINS MEDICAL JOURNAL 1982; 150:221-45. [PMID: 7045488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Henry M. Thomas: Johns Hopkins's first neurologist. THE JOHNS HOPKINS MEDICAL JOURNAL 1982; 150:11-21. [PMID: 7033632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Kinetics of c2-repressor synthesis in a regulatory defective P22 mutant. MOLECULAR & GENERAL GENETICS : MGG 1981; 184:147-50. [PMID: 7038385 DOI: 10.1007/bf00271211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Phage P22 defective in gene 24 and harbouring the Oc mutation k5 in OR exhibits a strongly increased c2-repressor synthesis after infection of non-lysogenic S. typhimurium. The repressor synthesis depends strictly on an intact c1 gene. The kinetics of its synthesis, as monitored by polyacrylamide gel electrophoresis, is the same as with P22 c+, namely a turn off 8-10 min after infection. - After infection of P22-lysogenic bacteria with either P22 24- k5 or P22 24- k5 c1, much lower amounts of repressor are synthesized but again with the same kinetics. These results suggest a cro-like function acting at PRE and PRM of P22. The possible reason for the c2 overproduction is discussed.
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Kinetics of P22 early gene expression suggests a cro-like regulatory function. MOLECULAR & GENERAL GENETICS : MGG 1981; 184:151-7. [PMID: 7038386 DOI: 10.1007/bf00271212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Analysis of phage-specified protein synthesis after phage infection of UV-irradiated cells shows a turn-off of early gene expression, a regulatory event that is independent of the known P22 regulatory functions. This supports the suggestion of a cro lambda-like function in P22. We have identified the products of genes 18 and int as contributing to the complex 40,000 dalton band in our SDS-polyacrylamide gels. Both gene products appear to be subject to regulation by the cro-like function of P22. Proteins of 33,000, 29,000, 27,000, 25,000, and 24,000 MW, specified by as yet unidentified P22 genes of the early leftward operon, are regulated by the same function. Our data suggest that the cro-like function is expressed from the early rightward operon.
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Stanhope Bayne-Jones, 1886-1970: the story of a lifetime devoted to country and to medicine. THE JOHNS HOPKINS MEDICAL JOURNAL 1981; 149:150-66. [PMID: 7026859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Science at the bedside: the story of Warfield Theobald Longcope. TRANSACTIONS & STUDIES OF THE COLLEGE OF PHYSICIANS OF PHILADELPHIA 1981; 3:161-73. [PMID: 7043809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Johns Hopkins and yellow fever: a story of tragedy and triumph. THE JOHNS HOPKINS MEDICAL JOURNAL 1981; 149:25-39. [PMID: 7019532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Joseph Charles Aub: applying the tools of the basic sciences to clinical investigation. Am J Med 1981; 71:13-5. [PMID: 7018234 DOI: 10.1016/0002-9343(81)90252-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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The influence of William Stewart Halsted's concepts of surgical training. THE JOHNS HOPKINS MEDICAL JOURNAL 1981; 148:215-36. [PMID: 7014969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Henry Mills Hurd: the first superintendent of the Johns Hopkins Hospital and the first professor of psychiatry. THE JOHNS HOPKINS MEDICAL JOURNAL 1981; 148:135-48. [PMID: 7009949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Repression of ant synthesis early in the lytic cycle of phage P22. MOLECULAR & GENERAL GENETICS : MGG 1981; 181:74-81. [PMID: 6938759 DOI: 10.1007/bf00339008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Using SDS-polyacrylamide gel electrophoresis to study the early expression of P22 genes we show that early expression of the ant-gene (imm I region) is turned off after 6-8 min, independent of the 'late' acting mnt-repressor. A semi-clear mutant called cir5 is defective for this early ant turn-off. The mutation cir5 maps in the imm I region of P22 between genes mnt and ant. P22 cir5 mutants are defective for a repressor which acts in trans to regulate early ant synthesis. There appears to be no absolute requirement of the cir5 allele for the establishment of lysogeny. The overproduction of ant in the P22 cir5 mutant leads to a marked increase in abortive infections, killing the infected cells. The cir5-phenotype can be suppressed by an ant- mutation.
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The conquest of scarlet fever: some Johns Hopkins contributions. THE JOHNS HOPKINS MEDICAL JOURNAL 1980; 147:53-63. [PMID: 6997587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Johns Hopkins's pioneer venture into international medicine: the commission to the Philippine Islands. THE JOHNS HOPKINS MEDICAL JOURNAL 1980; 147:13-27. [PMID: 6991766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Classics for clinical science: from horse and buggy doctor to clinical investigator: the story of James Bryan Herrick. Am J Med 1980; 68:639-41. [PMID: 6990757 DOI: 10.1016/0002-9343(80)90242-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Amebic dysentery gets its name: the story of William Thomas Councilman. THE JOHNS HOPKINS MEDICAL JOURNAL 1980; 146:185-92, 199-201. [PMID: 6991764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Clinical investigation of chronic diseases: its successful pursuit in an outpatient setting. JOURNAL OF CHRONIC DISEASES 1980; 33:529-66. [PMID: 6995473 DOI: 10.1016/0021-9681(80)90050-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Warfield Monroe Firor: a surgeon for all seasons. THE JOHNS HOPKINS MEDICAL JOURNAL 1980; 146:16-27. [PMID: 6986500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Albion Walter Hewlett: pioneer clinical physiologist. THE JOHNS HOPKINS MEDICAL JOURNAL 1979; 144:202-14. [PMID: 379405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Applying the methods of science to the study of tropical diseases--the story of Andrew Watson Sellards. THE JOHNS HOPKINS MEDICAL JOURNAL 1979; 144:45-55. [PMID: 368412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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