What is a main reason for an immune rejection of a graft CPA

What is a main reason for an immune rejection of a graft? CPA do not collaborate cytokines do not Interfere cell produce antigens MMC Coded by H CA being too different from one another In the situation where a person is dying due to an immune response, which acquired immunity path would have to be taken? naturally acquired passive route artificially acquired active route artificially acquired passive route naturally acquired act.re route

Solution

42. The answer is: MHC coded by HLA being too different from one another.

The MHC proteins expressed by the host is different from the graft, thus the graft behaves as an antigen.

43. The answer is: artificially acquired passive route.

When body\'s immune response is not enough to save to host, then artificially antibodies may be injected to revive the host.