Assertion: male reproductive system's part | /r/HasProperty | protection
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text: Part of this network includes local immunoregulatory and immunosuppressive mechanisms, which exist to provide protection for the endogenous antigens of spermatogenesis, protection that also extends to antigens expressed by foreign grafts inserted into the testis environment.19 Immune cells that enter the environment of the male reproductive tract become functionally modified to restrict their proinflammatory activity and provide an immunologically constrained environment where antigen-specific immune responses are closely controlled.