【化】 folic acid; folic aicd; pteroylglutamic acid; vitamin Bc 【医】 Day's factor; factors U; folacin; folic acid; folvite Lactobacillus casei factor; liver Lactobacillus casei fsctors; P. G. A. pteroylglutamic acid; R factors; SLR factors; vitamin Bc vitamin Bc conjugate; vitamin M; yeast Lactobacillus casei factors