TY - GEN AU - JIMENEZ DIAZ,C AU - ALES,J M AU - VIVANCO,F TI - Symbiotic action of intestinal microbial flora; studies on nicotinic acid, pyridoxine, folic acid, and vitamin B12 synthesis by microbial flora in the enteric tract SN - 0020-3955 PY - 2003///0501 KW - Bacteriology KW - Folic Acid KW - metabolism KW - Humans KW - Intestines KW - microbiology KW - Niacin KW - Nicotinic Acids KW - Pyridoxine KW - Vitamin B 12 KW - Vitamin B 6 N1 - Publication Type: Journal Article ER -