title: Variations in plasma thyrotrophin concentration in the neonatal calf and its relationship to circadian periodicity.
mesh_terms: D000367:Age Factors; D000818:Animals; D000831:Animals, Newborn; D002417:Cattle; D002940:Circadian Rhythm; D008297:Male; D011863:Radioimmunoassay; D013972:Thyrotropin / Q000097:blood*
chemical_list: D013972:Thyrotropin