Chickens, cows, bulls, and bears.
D000818:Animals; D001709:Biotechnology / Q000639:trends*; D002417:Cattle; D002645:Chickens; D003094:Collagen / Q000302:isolation & purification / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008297:Male; D008461:Meat Products; D009185:Myelin Proteins / Q000302:isolation & purification / Q000627:therapeutic use; D001503:Ursidae
D009185:Myelin Proteins; D003094:Collagen