title: [Survey on the concentrations of hormones (estradiol-17 beta, progesterone, testosterone) in bovine muscles].
abstract: Natural sex hormones, estradiol-17 beta (EST), progesterone (PRO) and testosterone (TES), in sixty domestic bovine muscles and forty bovine muscles imported from USA and Australia were determined by radioimmunoassay. The EST, PRO and TES levels (mean +/- standard deviation) in domestic samples (n = 60) was 1.15 +/- 1.87 ppt, 3.19 +/- 5.80 ppb and 30.9 +/- 122.1 ppt on a whole basis, respectively. The hormone levels in muscles was presumed to reflect sex, estrous cycle, and so on. The hormone levels in imported bovine muscles (n = 40) were 3.33 +/- 2.83 ppt (EST), 0.52 +/- 0.50 ppb (PRO) and 8.8 +/- 13.0 ppt (TES), respectively.
authors.affiliation: Tokyo Metropolitan Institute of Public Health: 3-24-1, Hyakunin-cho, Shinjuku-ku, Tokyo 169-0073, Japan.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Miyazaki
authors.forename: Tsuneo
authors.initials: T
authors.lastname: Hashimoto
mesh_terms: D000818:Animals; D001315:Australia; D002417:Cattle / Q000378:metabolism; D004958:Estradiol / Q000032:analysis*; D005260:Female; D007564:Japan; D008297:Male; D008460:Meat / Q000032:analysis*; D009132:Muscles / Q000737:chemistry; D011374:Progesterone / Q000032:analysis*; D012016:Reference Values; D013739:Testosterone / Q000032:analysis*; D014481:United States
chemical_list: D013739:Testosterone; D011374:Progesterone; D004958:Estradiol