title: Selected factors that affect the measurement of plasma progesterone concentrations in pregnant ewes.
mesh_terms: D000305:Adrenal Cortex Hormones / Q000097:blood; D000324:Adrenocorticotropic Hormone / Q000494:pharmacology; D000704:Analysis of Variance; D000818:Animals; D001800:Blood Specimen Collection; D002250:Carbon Radioisotopes; D002940:Circadian Rhythm; D005260:Female; D005615:Freezing; D006461:Hemolysis; D006854:Hydrocortisone / Q000494:pharmacology; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood*; D011869:Radioligand Assay; D012756:Sheep / Q000097:blood*; D012965:Sodium Chloride / Q000494:pharmacology; D013048:Specimen Handling; D013696:Temperature; D013997:Time Factors
chemical_list: D000305:Adrenal Cortex Hormones; D002250:Carbon Radioisotopes; D012965:Sodium Chloride; D011374:Progesterone; D000324:Adrenocorticotropic Hormone; D006854:Hydrocortisone