title: A comparison of tritiated and iodinated tracers in the radioimmunoassay of progesterone in cow milk.
abstract: Progesterone levels in the milk of cows were determined by two radioimmunoassay methods. Excellent correlation (r = 0.95) was found between the method using an iodinated radioligand and that using a conventional tritiated tracer.
mesh_terms: D000818:Animals; D002417:Cattle; D003429:Cross Reactions; D005260:Female; D007457:Iodine Radioisotopes; D008892:Milk / Q000032:analysis*; D011374:Progesterone / Q000032:analysis*; D011863:Radioimmunoassay / Q000379:methods*; D014316:Tritium
chemical_list: D007457:Iodine Radioisotopes; D014316:Tritium; D011374:Progesterone