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Mostrando ítems 11-20 de 103
Viable Calves Produced by Somatic Cell Nuclear Transfer Using Meiotic-Blocked Oocytes
(MARY ANN LIEBERT INC, 2011)
Somatic cell nuclear transfer (SCNT) has had an enormous impact on our understanding of biology and remains a unique tool for multiplying valuable laboratory and domestic animals. However, the complexity of the procedure ...
Oncogenic ras protein induces meiotic maturation of amphibian oocytes in the presence of protein synthesis inhibitors
(1988)
Microinjection of the activated ras oncogenic protein can induce the meiotic maturation of Xenopus laevis oocytes, a process that can also be triggered by progesterone or high concentrations of insulin. Cycloheximide and ...
Can extracellular vesicles from bovine ovarian follicular fluid modulate the in-vitro oocyte meiosis progression similarly to the CNP-NPR2 system?
(2020-11-01)
C-type natriuretic peptide (CNP) and its natriuretic peptide receptors subtype 2 (NPR2) are essential for the maintenance of oocyte meiotic arrest in different species. Extracellular vesicles (EVs) in bovine follicular ...
BRDT is an essential epigenetic regulator for proper chromatin organization, silencing of sex chromosomes and crossover formation in male meiosis
(Public Library Science, 2018)
The double bromodomain and extra-terminal domain (BET) proteins are critical epigenetic
readers that bind to acetylated histones in chromatin and regulate transcriptional activity
and modulate changes in chromatin structure ...
Effect of Temporary Meiotic Attenuation of Oocytes with Butyrolactone I and Roscovitine in Resistance to Bovine Embryos on Vitrification
(2016-04-01)
Contents: This study aimed to produce in vitro bovine embryos by the addition of two drugs, which is responsible for oocyte meiosis inhibition: roscovitine (ROS) and butyrolactone I (BL-I). Oocytes were recovered from ...
Homomorphic Sex Chromosomes and the Intriguing Y Chromosome of Ctenomys Rodent Species (Rodentia, Ctenomyidae)
(Karger, 2014-01-01)
Unlike the X chromosome, the mammalian Y chromosome undergoes evolutionary decay resulting in small size. This sex chromosomal heteromorphism, observed in most species of the fossorial rodent Ctenomys, contrasts with the ...