Vitamin B 12 absorption in tobacco amblyopia.
D000368:Aged; D000550:Amblyopia / Q000209:etiology* / Q000378:metabolism*; D001681:Biological Assay; D004032:Diet; D005055:Euglena / Q000378:metabolism; D005260:Female; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D008875:Middle Aged; D012546:Schilling Test; D012907:Smoking; D014805:Vitamin B 12 / Q000097:blood / Q000378:metabolism*; D014994:Xylose / Q000378:metabolism
D014994:Xylose; D014805:Vitamin B 12