title: Monoamines in the C cells of the thyroid gland of callithricid primates.
abstract: The thyroid gland of three species of marmosets were studied with the Falck and Hillarp fluroescence technique for monoamines. Two types of fluorescent C cells were observed. The predominant type displayed the greenish (or blue) fluorescence characteristic of catecholamines. The other type displayed a yellowish fluorescence most probably due to 5-HT. The presence of monoamines in C cells now reported for the first time in Primates offers an interesting possibility for studying their presumed role in calcitonin secretion.
mesh_terms: D000818:Animals; D001679:Biogenic Amines / Q000032:analysis*; D002116:Calcitonin / Q000378:metabolism; D002143:Callitrichinae; D005260:Female; D000882:Haplorhini; D008297:Male; D008856:Microscopy, Fluorescence; D012701:Serotonin / Q000032:analysis; D013961:Thyroid Gland / Q000032:analysis*
chemical_list: D001679:Biogenic Amines; D012701:Serotonin; D002116:Calcitonin