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Transient upregulation of poly (ADP-ribosyl)ation in fertilized and parthenogenetic 1-cell embryos A: fertilized embryos, B: parthenogenetic embryos. Poly ADP-ribose polymers were detected with an anti-PAR antibody and a fluorescein-labeled (green signal) second antibody, as described in Methods section. Nuclei were counterstained with DAPI.
