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In connection with investigations of the anabolic action of estrogens, we examined skeletal muscle of veal calves for estradiol receptors. The high speed supernatant of muscle homogenate was incubated with .5 nM 3H-estradiol and for the determination of nonspecific binding with .5 nM 3H-estradiol plus 13 nM estradiol at 0 C overnight. After treatment with(More)
Kidney fat samples from animals either untreated or after different treatments with 19-nortestosterone (NT) were cleaned up and NT-17 beta and 19-norandrostenedione (NA) were purified using high-performance liquid chromatographic (HPLC) systems that allowed their complete separation from other steroids and interfering physiological compounds. HPLC fractions(More)
Urine samples were collected from five Brown Swiss cows during the 18 days prior to and 11 days after parturition and were analysed for 19-nortestosterone using an enzyme immunoassay. Nortestosterone concentrations ranged from 70 to 130 nmol/l in all samples taken before parturition. The levels declined within two days, and 11 days post partum no(More)
PURPOSE The primary purpose of this study was to evaluate the ability of a home device preferential hyperacuity perimeter to discriminate between patients with choroidal neovascularization (CNV) and intermediate age-related macular degeneration (AMD), and the secondary purpose was to investigate the dependence of sensitivity on lesion characteristics. (More)
Certain milk replacers were reported to cause 19-nortestosterone (NT)-positive urine samples after feeding them to veal calves. In order to find the possible source of contamination, milk replacers and crude fat and meat meal from homogenized veal calves and commercial crude fat from a rendering plant were analysed for NT plus its metabolites and(More)
Procedures for the determination of medroxyprogesterone acetate (MPA) in adipose tissue collected at time of slaughter allowing the control of MPA application to veal calves are described. Screening radioimmunoassays after sample clean-up were sufficient for a first survey of MPA treatments in livestock herds. Validation of all positive samples was(More)
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