How tadpoles lose their tails.
D000818:Animals; D001001:Anura / Q000254:growth & development*; D002417:Cattle; D003094:Collagen / Q000378:metabolism*; D003470:Culture Media; D004798:Enzymes / Q000502:physiology*; D006168:Guinea Pigs; D006821:Hyaluronoglucosaminidase / Q000502:physiology; D066298:In Vitro Techniques; D008675:Metamorphosis, Biological; D051381:Rats; D013974:Thyroxine / Q000502:physiology
D003470:Culture Media; D004798:Enzymes; D003094:Collagen; D006821:Hyaluronoglucosaminidase; D013974:Thyroxine