title: Particular aspects of thyroid function development in the postnatal rat with special reference to interrelationships between mother and young.
abstract: Previous data have demonstrated that thyroid gland thyroxine secretion rate in suckling rats is high and correlated with the hormonal needs of the young. Non-hormonal iodine metabolism is more elevated in the young than in the adult. The object of the present work was to measure rates of iodine transfer in 10-day old families of rats equilibrated with 125I or not. Reciprocal iodine exchange between mother and young occurred in such a way that the dam recovered about 60 p. 100 of the iodine lost in the milk. Moreover, a large store of extrathyroidal iodine was constituted in the young, particularly in the pelt.
mesh_terms: D000828:Animal Population Groups / Q000502:physiology*; D000818:Animals; D000833:Animals, Suckling / Q000502:physiology*; D001522:Behavior, Animal; D003303:Coprophagia; D005260:Female; D006197:Hair / Q000032:analysis; D006801:Humans; D007455:Iodine / Q000032:analysis / Q000378:metabolism*; D007700:Kinetics; D008433:Mathematics; D051381:Rats; D011919:Rats, Inbred Strains; D013961:Thyroid Gland / Q000254:growth & development*; D013997:Time Factors
chemical_list: D007455:Iodine