title: Porphyrins in egg shells.
abstract: T.l.c. of esterified egg-shell porphyrin shows a mixture containing protoporphyrin with admixture of significant amounts of coproporphyrin, pentacarboxylic porphyrin and uroporphyrin and other, unidentified, porphyrins. This points to porphyrin biosynthesis taking place in the oviduct epithelium.
mesh_terms: D000818:Animals; D002645:Chickens; D002855:Chromatography, Thin Layer; D004528:Egg Shell / Q000032:analysis*; D004847:Epithelial Cells; D004848:Epithelium / Q000378:metabolism; D005260:Female; D005453:Fluorescence; D010057:Oviducts / Q000378:metabolism; D011166:Porphyrins / Q000032:analysis* / Q000096:biosynthesis; D014466:Ultraviolet Rays
chemical_list: D011166:Porphyrins