Zobrazeno 1 - 10
of 239
pro vyhledávání: '"N. L. First"'
Autor:
J. M. Robl, N. L. First
Publikováno v:
Bioscientifica Proceedings.
Autor:
John J. Parrish, N. L. First
Publikováno v:
Bioscientifica Proceedings.
Publikováno v:
Dairy Science Handbook ISBN: 9780429049361
The quality of animals has improved due to better management and genetic selection. The use of artificial insemination has contributed significantly to the genetic improvement of farm animals. Nuclear transfer probably holds more promise for obtainin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c569eb4fc4e99d6c8924ff6075f16da5
https://doi.org/10.1201/9780429049361-21
https://doi.org/10.1201/9780429049361-21
Publikováno v:
Theriogenology. 54:1327-1342
The effects of a combination of EGF and IGF-I (GFs) on the progress of meiosis and on their developmental competence were examined in cumulus-enclosed bovine oocytes. Exposure to GFs in serum-free, 0.3% PVP-containing maturation medium significantly
Publikováno v:
Human Reproduction. 14:1582-1587
The high incidence of chromosomally abnormal human embryos is frequently assumed to be due to a lack of checkpoint controls operating during early embryogenesis. In our study we have analysed when these mechanisms first become functional. Mouse oocyt
Publikováno v:
Theriogenology. 45:943-956
Success of in vitro maturation (IVM) and production of bovine embryos as related to aspects of follicle source and oocyte size were evaluated. First, it was determined that bovine oocytes continue growing in all follicular sizes studied, including >1
Publikováno v:
Journal of Experimental Zoology. 271:57-61
A Ca2+ ionophore (A23187, 3 microM) and inhibitor of protein synthesis (cycloheximide, 10 micrograms/ml) were used sequentially as a unique method for activating mouse oocytes in vitro. Brief exposure of oocytes to A23187 followed by 6 hr in cyclohex
Publikováno v:
Biology of Reproduction. 51:1099-1108
Capacitation is an important maturational event in the life of a spermatozoan that allows the sperm to undergo a stimulus-induced acrosome reaction. Bovine sperm can be induced to undergo capacitation in vitro by heparin or oviduct fluid, and capacit
Publikováno v:
Developmental Biology. 162:29-40
Microtubule organization in bovine oocytes during fertilization, polyspermy, parthenogenesis, and nuclear transfer is examined with the goal of understanding microtubule activity and the manner in which the centrosome during fertilization and mitotic
Publikováno v:
Biology of Reproduction. 49:459-462
Simple media were developed to study the metabolic requirements of bovine embryos up to Day 7 (Day 0 = day of oocyte aspiration) in vitro. Embryos were derived from oocytes matured and fertilized in vitro. At 45 +/- 2 h post insemination, embryos (>