The last time, the embryos did not survive.
Surprisingly, if the embryos survive this rude treatment, they seem to develop into normal babies.
By contrast, mammalian embryos survive best when they are frozen at the earliest possible stage of development.
How the embryos had survived the trip was a matter of considerable speculation at the infirmary.
And the embryos might not survive thawing.
But the embryos did not survive.
PMCA1 is ubiquitous throughout all tissues in humans, and without it embryos do not survive.
Since the embryos survive almost to hatching with no heart function, the defect is very observable.
The remaining embryo survived and turned into Dolly.