Groups of pregnant rats were injected with two successive daily doses of 3H-thymidine from gestational days 12 and 13 (E12 + 13) until the day before parturition (E21 + 22). In adult progeny of the injected rats the proportion of neurons generated on specific embryonic days was determined quantitatively in the vestibular and auditory nuclei of the upper medulla. In the vestibular nuclei, neuron...

background: the use of igys in a variety of methods in different areas of research, diagnostics, medical application and biotechnology should be considered widely. objectives: development of antibodies against extra cellular domain of influenza m2 (m2e) protein in egg yolk of laying hens. methods: a fusion construct harboring c-terminal of bovine heat shock protein 70 (hsp70) and influenza m2e ...

and Implications Chinese Meishan and Yorkshire were used to investigate mechanisms regulating the production and secretion of relaxin, progesterone, prolactin (PRL), and growth hormone (GH) during late pregnancy and lactation. Uterine surgical removal (hysterectomy) of nongravid gilts during the estrous cycle (day 8) extends luteal function to 150 days which is beyond the duration of normal pre...

The influence of copper and zinc supplements on milk production performances and health indicators was tested in a 20week feeding trial, with 40 Holstein-Friesian lactating cows, divided in four groups (copper, zinc, copper-zinc and control). Correlations of the Cu and Zn plasma values with some animal performance criteria of health (body condition score and somatic cell counts) and production ...

Ovarian steroid metabolism was investigated (i) during development in a normal inbred strain in which post-natal follicle growth has been described and (ii) in adult hypogonadal (hpg) mice which lack GnRH and have very low serum concentrations of gonadotrophins. Tissue was incubated with [3H]pregnenolone or [3H]androstenedione and metabolites separated by t.l.c. or h.p.l.c. Progesterone was the...