The occurrence of the  -( -glutamyl)lysine cross-link in the medulla of hair and quill.
D000818:Animals; D002162:Camelus; D010872:Caniformia; D004285:Dogs; D005973:Glutamine; D006168:Guinea Pigs; D006197:Hair / Q000166:cytology; D007633:Keratins; D008239:Lysine; D008322:Mammals; D008394:Marsupialia; D011487:Protein Conformation; D011506:Proteins; D011817:Rabbits; D051381:Rats; D012377:Rodentia; D013045:Species Specificity
D011506:Proteins; D005973:Glutamine; D007633:Keratins; D008239:Lysine