title: Cytogenetic analysis of 34 early stage bovine embryos from superovulated Hereford donors.
abstract: One hundred and thirty-four bovine embryos were collected from 17 superovulated Hereford cows and processed for metaphase chromosome spreads. Mitotic figures were obtained from 54 embryos (40%), but only 34 embryos (25%) provided analyzable chromosomes spreads. Thirty embryos were 2n = 60, one was a possible 2n/4n mosaic and three were hypodiploid. The hypodiploid cases and the 2n/4n mosaic could be due to technical artifacts.
mesh_terms: D000818:Animals; D002417:Cattle; D002869:Chromosome Aberrations; D004622:Embryo, Mammalian / Q000166:cytology*; D005260:Female; D007621:Karyotyping; D008938:Mitosis; D009030:Mosaicism; D011247:Pregnancy; D013480:Superovulation