4351
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Abstract
Testicular tumors comprise approximately 1 percent of all malignant neoplasms in the male. However, they are one of the more common malignant diseases of adolescent and young adult males. An unusual case of a testicular neoplasm in a 23-year-old man exhibiting gingival metastasis is presented.
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4352
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Keydar I, Chen L, Karby S, Weiss FR, Delarea J, Radu M, Chaitcik S, Brenner HJ. Establishment and characterization of a cell line of human breast carcinoma origin. Eur J Cancer 1979; 15:659-70. [PMID: 228940 DOI: 10.1016/0014-2964(79)90139-7] [Citation(s) in RCA: 482] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
MESH Headings
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Breast Neoplasms/ultrastructure
- Carcinoma, Intraductal, Noninfiltrating/metabolism
- Carcinoma, Intraductal, Noninfiltrating/pathology
- Carcinoma, Intraductal, Noninfiltrating/ultrastructure
- Caseins/analysis
- Cell Line
- Estradiol/metabolism
- Female
- Fluorescent Antibody Technique
- Humans
- Karyotyping
- Microscopy, Electron
- Middle Aged
- Pleural Effusion/cytology
- Receptors, Androgen/metabolism
- Receptors, Estrogen/metabolism
- Receptors, Glucocorticoid/metabolism
- Receptors, Progesterone/metabolism
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4353
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Chang-Chien CS, Tseng BW, Chen L, Liaw YF. [Malignant hemangioendothelioma of the liver --case report and review of literature (author's transl)]. Taiwan Yi Xue Hui Za Zhi 1978; 77:868-72. [PMID: 284096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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4354
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Chen PC, Liaw YF, Chang-Chien CS, Wu CS, Chen L. [Hepatitis after halothane exposure (author's transl)]. Taiwan Yi Xue Hui Za Zhi 1978; 77:685-91. [PMID: 281453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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4355
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Liaw YF, Chang-Chien CS, Wu CS, Chen PC, Chen L. [Needle biopsy of the liver in outpatients (author's transl)]. Taiwan Yi Xue Hui Za Zhi 1978; 77:673-7. [PMID: 281452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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4356
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Mosley WH, Rahman MM, Chen L, Aziz KM, Greenough WB. International research laboratory in Bangladesh. Lancet 1978; 1:602-3. [PMID: 76135 DOI: 10.1016/s0140-6736(78)91042-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4357
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Kuo CY, Tsai PL, Chen L. A case report of giant pigmented naevus. Mod Med Asia 1978; 14:19-21. [PMID: 642909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4358
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4359
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Vladimirsky F, Chen L, Amsterdam A, Zor U, Lindner HR. Differentiation of decidual cells in cultures of rat endometrium. J Reprod Fertil 1977; 49:61-8. [PMID: 833790 DOI: 10.1530/jrf.0.0490061] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Endometrial scrapings were collected from rat uteri at various times (0-4 days) after induction of a decidual reaction by i.p. injection of pyrathiazine hydrochloride (20 mg/animal) on the 5th day after a sterile mating. The tissue was dissociated by treatment with trypsin and the cells were cultured as monolayers. The differentiation of decidual cells was followed in these cultures. Two morphologically distinct cell populations were recognized: (i) dispersed spindle-shaped or stellate cells, and (ii) colonies of closely packed polygonal cells, first apparent after 48 h in culture. During culture, [3H] thymidine was incorporated into the nuclei of both cell types, as indicated by autoradiography. There was an increase in the number of cells in the colonies as culture progressed; most mitotic figures and the highest % of labelled nuclei were located within the colonies. Bi- and multinucleated cells, which are a characteristic feature of decidual tissue in vivo, appeared in the colonies on the 3rd day of culture and constituted about 60% of the colony population after 4-5 days. The dispersed cells showed a doubling in nuclear area during 4 dyas in culture, suggesting the formation of polyploid cells; such cells are prominent in fully differentiated decidual cells in vivo. The content of prostaglandin E in the cultured cell, determined by radioimmunoassay, was about 15-fold higher than that in rat embryo fibroblast cultures grown under similar conditions, and was comparable to the level of prostaglandins found in decidual cells in vivo.
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4360
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Su YL, Chen L. [Nursing care study of the patient with cerebral arterio-venous malformation (A.V.M.) (author's transl)]. Hu Li Za Zhi 1977; 24:1-10. [PMID: 69694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4361
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Abstract
1. Decrement of the lateral giant fibre escape response was studied in intact, restrained, crayfish and in those with the ventral nerve cord transected at the thoracic-abdominal level. 2. Taps (delivered at rates of 1 per 5 min to the abdomen) depressed responsiveness to about 50% of its inital value in 10 trials, for both intact and operated animals. 3. With additional stimulation, responsiveness dropped to near zero for both groups. Recovery was negligible 2 h later, but nearly complete after an additional 24 h rest. 4. Protection against response decrement in this situation was obtained by directly activating the cord giant fibres 30 msec prior to the tactile stimulus. The directly-elicited giant fibre spikes which follow the tactile stimulus do not influence the course of response decrement. 5. The results establish the decrement as centrally mediated habituation, and minimize the role of receptor alterations or descending neuronal influences in the behavioural change. 6. A comparison is made between the properties of hibituation and the homosynaptic depression of afferent to interneurone synapses that is presumed to be the physiological mechanism of habituation in this situation.
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4362
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4363
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Abstract
SUMMARY
Dispersed human endometrial and myometrial cells grown for up to 4 months as monolayer cultures responded to addition of oestradiol-17β (1 × 10−9 mol/l) to the medium by increased [3H]thymidine incorporation into DNA, and an increased rate of cell division. Cultures derived from uterine leiomyomata showed a less consistent mitotic response to the hormone.
Normal endometrial and myometrial cells grown in the oestradiolenriched medium showed a significantly higher efficacy of colony formation (increases of about 60 and 90%, respectively) than cells grown in control medium throughout the experimental period. Exposure to the hormone for 3–4 days was sufficient to induce this effect, which suggests that it does not depend on selection of hormone-sensitive cells. The mitogenic effect of oestradiol, as expressed by increased cloning efficacy, persisted for several days after transfer of the cells to a hormone-free medium. Cultures of foetal rat skeletal muscle failed to respond to oestradiol-17β in the cloning test, and oestradiol-17α was without effect on uterine cells.
It is concluded that oestradiol-17β exerts a direct mitogenic action on some cellular components of the human endometrium and myometrium in vitro.
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4364
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Chen L. Studies on the relationship between thymus regeneration and lymphoma prevention in C57Bl-6 mice irradiated and injected with syngeneic spleen cells. Int J Cancer 1971; 7:491-8. [PMID: 5559594 DOI: 10.1002/ijc.2910070315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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4365
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4366
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Rubegni M, Provvedi D, Palazzuoli V, Chen L. Sympathomimetic agents and serum-lipid levels. Lancet 1970; 2:779. [PMID: 4196006 DOI: 10.1016/s0140-6736(70)90263-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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4367
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Abstract
Injection of syngeneic bone marrow cell to adult C57BL/6 mice treated DMBA intragastrically failed to prevent lymphoma induced by the chemical.The present result seem to indicate that bone marrow cells do not hasten the regeneration of the transient injuried thymus by DMBA as compared with their effect in irradiated mice.IT APPEARS THAT, UNDER THE CONDITIONS USED, DMBA DOES NOT CAUSE SIGNIFICANT DAMAGE TO THE BONE MARROW SINCE MARROW CELLS FROM CHEMICALLY TREATED MICE WERE AS EFFECTIVE AS NORMAL MARROW CELLS IN: (a) preventing radiogenic leukaemia, (b) repairing radiation damage of the thymus, (c) preventing the lethal action of high doses of irradiation.Marrow cells failed to restore antibody formation to Shigella depressed by DMBA as they do in irradiated mice.The result strengthen our previous view on the critical role of bone marrow on the effects caused by irradiation and not in the leukaemia process as such.
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4368
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Edelstein T, Chen L, McLachlan J. Investigations of the marine algae of Nova Scotia. VIII. The flora of Digby Neck Peninsula, Bay of Fundy. ACTA ACUST UNITED AC 1970. [DOI: 10.1139/b70-086] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The algal flora at two selected sites on the Digby Neck Peninsula, Bay of Fundy, was examined at monthly intervals for a year. One hundred and eighty-seven species and varieties were recorded; of these 76 are newly recorded for the Bay of Fundy and 11 are new records for North America. A taxonomic listing, inclusive of reproductive structures found during the year, is given. Seasonal changes and vertical migration of the algae are discussed.
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4369
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4370
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Watkins JF, Chen L. Immunization of mice against Ehrlich ascites tumour using a hamster-Ehrlich ascites tumour hybrid cell line. Nature 1969; 223:1018-22. [PMID: 4309463 DOI: 10.1038/2231018a0] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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4371
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Mirvish SS, Chen L, Haran-Ghera N, Berenblum I. Comparative study of lung carcinogenesis, promoting action in leukaemogenesis and initiating action in skin tumorigenesis by urethane, hydrazine and related compounds. Int J Cancer 1969; 4:318-26. [PMID: 5801419 DOI: 10.1002/ijc.2910040309] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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4372
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Chen L, Berenblum I. A quantitative study of the leukemogenic action of whole-body x-irradiation and urethane. II. In newborn C57BL mice. Isr J Med Sci 1968; 4:1164-8. [PMID: 5756643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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4373
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Berenblum I, Chen L, Trainin N. A quantitative study of the leukemogenic action of whole-body x-irradiation and urethane. I. In adult C57BL mice. Isr J Med Sci 1968; 4:1159-63. [PMID: 5756642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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4374
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4375
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Abstract
Unilocular and plurilocular sporangia of Ralfsia fungiformis are, for the first time, recorded for North America. The validity of certain types of structures, considered by some authors as plurilocular sporangia, is discussed.
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Affiliation(s)
- T Edelstein
- Atlantic Regional Laboratory, National Research Council of Canada, Halifax, Nova Scotia
| | - L Chen
- Atlantic Regional Laboratory, National Research Council of Canada, Halifax, Nova Scotia
| | - J McLachlan
- Atlantic Regional Laboratory, National Research Council of Canada, Halifax, Nova Scotia
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4376
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Chen L. The correction formula for matching tests. Journal of Educational Psychology 1944. [DOI: 10.1037/h0062386] [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: 11/08/2022]
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