title: Colorimetric analysis of vitamin A and carotene.
mesh_terms: D002338:Carotenoids / Q000097:blood*; D003124:Colorimetry / Q000379:methods; D006801:Humans; D007202:Indicators and Reagents; D014801:Vitamin A / Q000097:blood*
chemical_list: D007202:Indicators and Reagents; D014801:Vitamin A; D002338:Carotenoids