2006年，多纳托·蒙塔纳罗20多年前移植的一片右眼角膜开始出现排斥反应，于是被送进急诊室。

In 2006, Donato Montanaro Jr. 's right eye began rejecting a cornea transplant from more than 20 years before. He rushed to an emergency room.

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观察各组角膜移植术后排斥反应指数（RI）、植片存活时间（MST）和植片的病理变化。

The rejection index (RI), means survival time (MST) of corneal grafts, and histopathological changes in corneal grafts were recorded.

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