title: Simplified methods for the examination of liver lipids. I. Determination of vitamin A in liver using a direct solvent extraction technique.
mesh_terms: D000818:Animals; D002645:Chickens; D002854:Chromatography, Paper; D004032:Diet; D007202:Indicators and Reagents; D008099:Liver / Q000032:analysis*; D008722:Methods; D010578:Petroleum; D012756:Sheep; D013045:Species Specificity; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014801:Vitamin A / Q000032:analysis*; D014802:Vitamin A Deficiency / Q000378:metabolism
chemical_list: D007202:Indicators and Reagents; D010578:Petroleum; D014801:Vitamin A