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[文献書誌] Nakarai T.and Koizumi S.: "Effects of Calcium antagonists on antiーcancer drug toxicity to haematopoietic progenitor cells in normal human bone marrow" Leukemia Research. 14. 401-405 (1990)
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[文献書誌] Katayama K and Koizumi S: "Antagonistic effects of interleukinー6 and GーCSF in the later stage of human granulopoiesis in vitro." Experimental Hematology. 18. 390-394 (1990)
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[文献書誌] Koizumi S.: "Reversal of methotrexate cytotoxicity to human bone marrow cells and leukimic K562 cells by leucovorin:methotrexate polyglutamates formation as a possible important factor." Jpn J.Cancer Research. 81. 1162-1167 (1990)
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[文献書誌] Nakarai T and Koizumi S.: "Paradoxical enhancement of interleukinー2ーmediated cytotoxicity against K562 cells by additioin of a low dose of methotrexate." Cancer Immunology Immunotherapy. 32. 8-12 (1990)
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[文献書誌] Koizumi S.: "Retrospective analysis of late intensification therapy with highdose methotrexate for standardーrisk acute lymphoblastic leukemia in childhood (CCLSGーS811 study)" International Journal of Hematology.
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[文献書誌] Koizumi S.: "Enzymatic analysis of methotrexateーresistant human leukemic cell (K562) subclones:multiple changes of methotrexate metabolism." Jpn J.Cancer Research.
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[文献書誌] 小泉 晶一: "メソトレキセ-ト耐性とそのモジュレ-ション" 腫瘍と感染. 3. 511-520 (1990)
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[文献書誌] 小泉 晶一: "メソトレキセ-ト耐性と遺伝子増幅・発現" 組織培養. 16. 204-244 (1990)
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[文献書誌] 小泉 晶一: "VMA,HVA" 小児科診療. 53増刊. 706-708 (1990)