1. Dependence of 5-methyltetrahydrofolate utilization by L5178Y murine leukemia cells in vitro on the presence of hydroxycobalamin and transcobalamin 11;Chello;Cancer Res.,1973
2. The effect of replacement by homocysteine on survival of malignant and normal adult mammalian cells in culture;Halpern,1974
3. High in vivo rates of methionine biosynthesis in transformed human and malignant rat cells auxotrophic for methionine;Hoffman,1976
4. 5-Methyltetrahydrofolate: synthesis and utilization in normal and SV40-transformed BHK-21 cells;Jacobsen;Biochem. biophys. Res. Commun.,1977
5. An increased requirement for methionine by transformed rat liver epithelial cells in vitro;Wilson;Exp. Cell Res.,1978