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Objective To characterize the binding effects of 1 7D3 anti-pZP monoclonal antibody (mAb) on porcine and human ZP, ovary and other important tissues Methods The 1 7D3 anti-pZP mAb was produced by immunizing mouse with porcine zona pellucida and hybridoma and monoclonal antibody preparation. An ABCimmunohistochemistry was used to evaluate reaction of mAb 17D3pZP to porcine and human ZP antigens as well as important human tissue antigens.Results mAb 1 7D3pZP specifically bound to porcine and human ZP antigen, but not to other cells of ovaries and other important human tissue antigens.Conclusion 17D3 anti-pZP mAb can recognize porcine and human ZP antigen without cross-reaction with other human tissue antigens including ovary, so it may further help us to abstract and purify corresponding target antigen and settle basis for producing human ZP contraceptive vaccine.