Chen, C L Serum thyroxine and triiodothyronine concentrations in neonatal foals and mature horses. [electronic resource] - American journal of veterinary research Aug 1981 - 1415-7 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0002-9645 Subjects--Topical Terms: Age FactorsAnimalsAnimals, Newborn--bloodFemaleHorses--bloodMaleSex FactorsThyroxine--bloodTriiodothyronine--blood