Assertion: sperm | /r/HasProperty | preincubated with dtnb
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text: To check the possibility that a PDI activity on the egg surface could partially compensate for the blocked protein(s) on sperm, both sperm and eggs were preincubated with DTNB, washed, and then incubated together ( Figure 1 D, column S+E), but inhibition was similar to that obtained by preincubating only sperm with DTNB ( Figure 1 D, column S).