title: Avian thyroid isthmus.
abstract: An avian equivalent of the mammalian thyroid isthmus appeared in thiouracil-treated (.1% in feed from hatching to 6 and 8 weeks of age) chickens. In two experiments in which chickens were fed a diet containing thiouracil, thyroid tissue was found connecting the thyroid glands. Histological examination of the connecting tissue revealed that it was of the same cellular composition as the thyroid glands.
authors.affiliation: Poultry Science Department, Mississippi State University, Mississippi State 39762.
authors.forename: T R
authors.initials: TR
authors.lastname: Scott
authors.forename: B
authors.initials: B
authors.lastname: Glick
authors.forename: G T
authors.initials: GT
authors.lastname: Pharr
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects*; D005260:Female; D007491:Ipronidazole / Q000494:pharmacology*; D008297:Male; D008715:Methionine / Q000494:pharmacology*; D009593:Nitroimidazoles / Q000494:pharmacology*; D014422:Turkeys / Q000254:growth & development*
chemical_list: D009593:Nitroimidazoles; D007491:Ipronidazole; D008715:Methionine