Article
Blastocysts prepare for the race to be male
1 Oct 1993
Abstract excerpt
Recent findings in different mammalian species have demonstrated that XY embryos grow faster than XX embryos before the gonads are differentiated. In mice and cattle, accelerated development is already evident in XY blastocysts, while in the rat and in human fetuses a quantitative sex difference has been shown to be present before testicular differentiation has occurred. These data demonstrate that in these...
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