Morphology of spermatozoa bound to the zona pellucida of human oocytes that failed to fertilize in vitro.

@article{Liu1992MorphologyOS,
  title={Morphology of spermatozoa bound to the zona pellucida of human oocytes that failed to fertilize in vitro.},
  author={De Yi Liu and Hugh William Gordon Baker},
  journal={Journal of reproduction and fertility},
  year={1992},
  volume={94 1},
  pages={71-84}
}
The morphology of spermatozoa bound to the zona pellucida (ZP) of 264 oocytes that had failed to fertilize in 58 in vitro fertilization procedures was studied by light microscopy. The percentage of spermatozoa with normal morphology bound to the ZP (mean 77, range 8-100) was significantly higher than in the insemination medium (mean 42, range 2-80). The abnormal spermatozoa bound to the ZP had small oval (47%), pyriform (46%), amorphous (5%) and tapering (2%) heads. Other abnormalities of… CONTINUE READING

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