Cancer Research 1978-Nov
5-Methyltetrahydrofolic acid, 5-formyltetrahydrofolic acid (folinic acid), and folic acid requirements of normal and Rous sarcoma virus-infected chicken fibroblasts.
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Keywords
Abstract
Normal and Rous sarcoma virus-infected chicken fibroblasts proliferate maximally in a culture medium containing a physiological (10 ng/ml) concentration of 5-methyltetrahydrofolic acid or folinic acid (5-formyltetrahydrofolic acid), while their maximal proliferation requires a hyperphysiological (1000 ng/ml) concentration of folic acid. The normal and Rous-infected fibroblasts do not differ in their requirements for 5-methyltetrahydrofolate, folinic acid, or folic acid.