Meiosis of mouse eggs before and after sperm penetration.
D000818:Animals; D002875:Chromosomes; D005260:Female; D005306:Fertilization; D008297:Male; D008540:Meiosis; D008722:Methods; D051379:Mice; D010060:Ovulation; D010063:Ovum / Q000166:cytology*; D013094:Spermatozoa