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Preliminary estimates of the permeability of mouse ova and early embryos to glycerol.
Within 30 h of fertilisation, 182 ova (93.8%) cleaved to the 2-cell stage, and subsequently 163 ova (84.0%) developed beyond the 2-cell stage.
The pipette was moved to a drop containing ova.
Fertilised ova at the pronuclear stage were collected from the oviducts of naturally mated females 10-12 h after the estimated time of ovulation.
Had the ova been collected from a random sample, small sample size would still preclude the use of this estimate in our work.
The zona reaction of hamster and mouse eggs: term offspring from in v/fro-fertilized ova.
Ocular haemorrhage was observed only in the infected mice, more frequently in those receiving a higher dose of ova.
If we knew how old the ova were, we could judge the accuracy of the [criteria].