Number of germ cells and meiotic prophase stages in fetal rat ovaries cultured in vitro.
Ovaries from 13.5-day-old rat fetuses were cultured in vitro in a hormone-free medium for up to 8 days. The number of germ cells increased during the first 4 days and then sharply decreased. The initial decrease was concomitant with the first leptotene stages. All stages of meiotic prophase progressively appeared in the remaining germ cells.
D000818:Animals; D002452:Cell Count; D002478:Cells, Cultured; D003470:Culture Media; D005260:Female; D010053:Ovary / Q000033:anatomy & histology / Q000196:embryology* / Q000502:physiology; D010063:Ovum; D011418:Prophase; D051381:Rats; D011919:Rats, Inbred Strains
D003470:Culture Media