Ultimobranchial gland of the freshwater snake Natrix piscator schneider.
D000818:Animals; D002118:Calcium / Q000097:blood; D010710:Phosphates / Q000097:blood; D012911:Snakes / Q000502:physiology*; D014460:Ultimobranchial Body / Q000033:anatomy & histology / Q000502:physiology*
D010710:Phosphates; D002118:Calcium