Abstract
In tissue cultures of normal adult and malignant mammalian cells, homocystine has been substituted for methionine in a medium rich in folic acid and cyanocobalamin. Normal adult cells thrive. Three highly malignant cell types from three different species, including man, die.
MeSH terms
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Animals
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Breast
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Carcinoma 256, Walker / metabolism*
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Cell Division / drug effects
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Cell Line
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Cell Survival
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Cells, Cultured / metabolism*
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Culture Media
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Female
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Fibroblasts
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Folic Acid / metabolism
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Homocystine / metabolism*
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Humans
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Leukemia L1210
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Leukemia, Experimental
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Leukemia, Myeloid
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Liver
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Male
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Methionine / metabolism*
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Mice
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Prostate
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Rats
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Vitamin B 12 / metabolism
Substances
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Culture Media
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Homocystine
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Folic Acid
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Methionine
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Vitamin B 12