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. 2009 Aug 3;10:348. doi: 10.1186/1471-2164-10-348

Figure 1.

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.