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Fig. 4. Sperm binding to T-syn/ eggs. (A,B) The zona of T-syn/ eggs was marginally thinner and less uniform than wild-type zona. (C,D) Sperm binding to T-syn/ and wild-type eggs was equivalent. Two-cell embryo controls had no sperm binding under these conditions. (E,F) Higher magnification shows comparable numbers of sperm bound to eggs of each genotype.