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Dev Genet. 1989;10(4):333-8.

Stage-specific gene expression in early chick embryo.

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  • 1Department of Biology, University of Patras, Greece.


Inhibition of DNA replication by aphidicolin in the chick morula interferes with its progression to a normal blastula and prevents induction of the first morphogenetic cell movements of primitive streak formation. Embryos in aphidicolin synthesize some polypeptides typical of blastula but do not display all the characteristic features of morula to blastula transition. Inhibition of DNA replication interferes with the sequential synthesis of maternally coded polypeptides and with the activation of the embryonic genome in the chick embryo.

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