Protozoan physiology. Why are cows not green?
D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002417:Cattle; D002736:Chloroplasts / Q000502:physiology; D056890:Eukaryota / Q000502:physiology*; D008974:Mollusca / Q000502:physiology; D010788:Photosynthesis; D010858:Pigmentation
D000596:Amino Acids