Major Histocompatibility Complex I Mediates Immunological Tolerance of the Trophoblast during Pregnancy and May Mediate Rejection during Parturition

<table>Expression of classical MHC I (ELA) proteins in the horse placenta. ELA are expressed only on the migrating chorionic girdle. Then ELA expression is downregulated when endometrial cups are created. After some time, the endometrial cups degenerate, and they have not been detected after day 120 of pregnancy.</table>

Mediators of Inflammation

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Figure 3: Major Histocompatibility Complex I Mediates Immunological Tolerance of the Trophoblast during Pregnancy and May Mediate Rejection during Parturition 

Figure 3 | Major Histocompatibility Complex I Mediates Immunological Tolerance of the Trophoblast during Pregnancy and May Mediate Rejection during Parturition 