METHODS: High risk corneal transplantation was performed using rats with different minor histocompatibility antigens.
方法：选用组织相容性抗原复合体遗传背景不同的两种品系大鼠进行高危角膜移植。
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Methods: a rat model of cervical heterotopic cardiac transplantation was established and the different donor antigens were infused through the portal vein.