Van Niekerk, C.H.; Gerneke, W.H.; Jansen, B.C.(Pretoria : The Government Printer, 1966)
As many as ten different ova in all stages of cytolysis were encountered in the
uterine tubes of mares. As the follicles of the mare were consistently found to be
mon-ovular, it is concluded that unfertilized ova do not, ...