Incidence of  Rejection Mismatch         Mice     Rat References MHC + minor H 50% 50-55% [7,9,10,73] MHC class I only                 30% 18% [9,13]    Minor H only 45%-53%           26% [9,14] MHC class II only 17%      0% [9,12]

Table 1: Effect of MHC and Minor histocompatibility gene mismatches on corneal allograft survival in rodents.