The egg nucleus regulates the behavior of sperm nuclei as well as cycling of MPF in physiologically polyspermic newt eggs.

@article{Iwao1993TheEN,
  title={The egg nucleus regulates the behavior of sperm nuclei as well as cycling of MPF in physiologically polyspermic newt eggs.},
  author={Yasuhiro Iwao and Naoaki Sakamoto and Kazuhiko Takahara and Masakane Yamashita and Yoshitaka Nagahama},
  journal={Developmental biology},
  year={1993},
  volume={160 1},
  pages={
          15-27
        }
}
The possible role of the egg nucleus in regulating the behavior of sperm nuclei and the cycling of maturation-promoting factor (MPF) was investigated in the physiologically polyspermic eggs of the newt Cynops pyrrhogaster. Many sperm entered all areas of the egg, but only one sperm pronucleus, the principal sperm pronucleus, moved to the center of the animal hemisphere to form a zygote nucleus with the egg pronucleus. All sperm and egg pronuclei synthesized DNA, but the zygote nucleus completed… CONTINUE READING
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