title: Further study of the relation of vitamin A to retinal degenerations.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012162:Retinal Degeneration / Q000097:blood*; D012163:Retinal Detachment / Q000188:drug therapy; D012174:Retinitis Pigmentosa / Q000097:blood / Q000188:drug therapy; D014801:Vitamin A / Q000097:blood* / Q000627:therapeutic use
chemical_list: D014801:Vitamin A