Distribution of PCNA during postblastoderm cell division cycles in the Drosophila melanogaster embryo: effect of a string- mutation.

Abstract excerpt

We used immunocytochemical methods and a specific antibody to identify proliferating cell nuclear antigen (PCNA) in Drosophila embryos during the postblastoderm cell division cycles. The strong nuclear staining observed during interphase disappeared at prophase, staining remained nil throughout the remaining mitotic (M) phases and reappeared in nuclei at the next interphase. As the embryos with the homozygous...

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