title: Seasonal changes in the plasma retinol-binding holoprotein concentration of sheep.
abstract: 1. Seasonal variations in plasma retinol-binding holoprotein concentration have been found in two groups of entire ewes and in a control group of wethers (castrated rams). 2. In each group retinol-binding holoprotein level was minimal in summer and increased to peak values in September just before the autumn breeding season.
mesh_terms: D000818:Animals; D004739:England; D005260:Female; D008297:Male; D011247:Pregnancy; D012177:Retinol-Binding Proteins / Q000378:metabolism*; D054839:Retinol-Binding Proteins, Plasma; D012621:Seasons; D012737:Sex Factors; D012756:Sheep / Q000097:blood*
chemical_list: D012177:Retinol-Binding Proteins; D054839:Retinol-Binding Proteins, Plasma