A cyclic variation in thyroid-stimulating hormone in the fetal rhesus monkey.
Morning and evening simultaneous fetal and maternal plasma samples were analyzed for thyroid-stimulating hormone. An a.m.-p.m. variation in fetal concentrations was identified, whereas the majority of the maternal values (28 of 32) were below the sensitivity of the assay. The importance of this cyclic fetal activity is discussed.
D000818:Animals; D002940:Circadian Rhythm; D003500:Cyclization; D005260:Female; D008253:Macaca mulatta; D008954:Models, Biological; D011247:Pregnancy; D013972:Thyrotropin / Q000097:blood*
D013972:Thyrotropin