科研之友
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摘要
<正>美国马里兰大学实施了全球首例将猪心脏移植到人体内的手术。该大学医学系的一个团队将一颗经过10次基因改造后的猪心脏移植到了一位心力衰竭的男子身上。主题语境：人与社会篇幅：353词建议用时：7分钟Doctors have transplanted the heart from a genetically modified pig into the chest of a man from Maryland in an effort to save his life. The first-of-its-kind surgery is being hailed as a major step forward in the decades-long effort to successfully transplant animal organs into humans.
