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EGFP transgene is expressed in IVF embryos produced by sperm from recipient boars. Fluorescent (A) and bright-field (B) images of an embryo generated by IVF using sperm from one of the recipients that produced positive ejaculates are shown. The control embryo (C and D) was generated by using sperm from a control boar. Bar = 25 μm (A and B) and 50 μm (C and D).
