Figure 1.

A representative image of a ZP-free MII oocyte selected for proteomic analysis. During the process of removing zona pellucidae, the status of oocyte was checked rigorously, and only healthy denuded oocytes were chosen for further study.

Zhang et al. BMC Genomics 2009 10:348   doi:10.1186/1471-2164-10-348
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