The ultimobranchial origin of calcitonin.
D000818:Animals; D001934:Branchial Region / Q000032:analysis* / Q000033:anatomy & histology; D002116:Calcitonin / Q000032:analysis*; D002118:Calcium / Q000097:blood; D002645:Chickens; D002850:Chromatography, Gel; D010856:Columbidae; D004702:Endocrine Glands / Q000032:analysis*; D008116:Lizards; D051381:Rats; D013552:Swine; D013961:Thyroid Gland / Q000032:analysis; D014020:Tissue Extracts / Q000032:analysis
D014020:Tissue Extracts; D002116:Calcitonin; D002118:Calcium