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Figure 2


Fig. 2. Transmission electron photomicrographs of Acr3-EGFP sperm binding to mouse embryos. After in vitro fertilization, Acr3-EGFP sperm bound to: (A) the zona pellucida surrounding wild-type (referred to as `normal') mouse embryos (2 hours post-insemination) with an intact acrosome; (B) huZP2 transgenic embryos (12 hours post-insemination) having undergone acrosomal exocytosis; and (C) huZP2 rescue embryos (12 hours post-insemination) with an intact acrosome. IAM, inner acrosomal membrane. Scale bar: 1 µm.