A | 近日，山西临汾发生4.1级地震。在当地一所中学，几位初中生撤离途中，看到一名同学因骨折行动不便，他们或扶或背，一起帮同学安全撤离。 Harvard-affiliated scientists say they have been able to keep a monkey alive for two years with a genetically engineered pig kidney. Although preliminary, transplant experts say this research is an important milestone in the search for an alternative source of organs.Scientists are hopeful that one day, genetically modified organs grown in pigs may be able to significantly extend the life of people with end-stage organ failure.In recent months, other high-profile research teams at New York University and the University of Alabama at Birmingham announced successful transplants of genetically modified pig-kidneys into brain dead human donors. But those experiments ended after a few weeks."Duration of survival has been an Achilles heel of genetically modified pig organs to date due to a combination of rejection and opportunistic infections," said Dr. Peter Chin-Hong, director of the transplant infectious disease program at University of California, San Francisco.This new research, published in Nature, represents the longest period of time that scientists have been able to keep a non-human primate research animal alive."This proof-of-concept study provides real hope that transplantation of porcine [pig] donor kidneys into humans is very much on the horizon," Chin-Hong said.Still, experts cautioned that this new research was preliminary, and the idea of pig-grown organs is likely several years away from becoming a reality."If ultimately proved successful in human organ recipients - which is still years away at this point - this could be one of the key advances needed to make xenotransplantation a reality in clinical practice," said Dr. Josh Levitsky, president of the American Society of Transplantation.The new research was led by eGenesis, a company co-founded by Harvard geneticist George Church. In a press release, scientists at eGenesis said the new research will help lay the groundwork for formal clinical trials.In prepared remarks, eGenesis CEO Michael Curtis, PhD, said the company is focused on "improving long-term survival for transplant recipients from months to years."Eventually, the hope is that transplant doctors will be able to use genetically modified pig organs instead of solely relying on deceased human organ donors."Among all solid organs transplanted, kidneys are most sought after, expected to increase in demand further, and there is a significant shortfall of organs leading to premature deaths," Chin-Hong said.Every day, 17 people die waiting on the organ transplant list, according to the Health Resources & Services Administration. There are currently more than 100,000 people waiting on the national transplant list and a new person is added to the list every 10 minutes.。这一幕获得众多网友点赞！地震发生时，临汾同盛实验中学拉响警报。同学们在老师的指挥下，迅速有序地朝操场方向撤离。在撤离的人流中，腿部骨折的李卓群拄着拐杖，行动极为不便。为了不耽误其他同学逃生，他试图退到墙角。此时，申延辉注意到了李卓群，申延辉没有丝毫犹豫，冲过人群，快步来到李卓群身边说：“别慌，我扶你！”他用臂膀架起李卓群，艰难地朝着楼梯口挪动。这时，从四楼撤离的柴宇喆看到了申延辉搀扶李卓群的场景。他第一时间冲上前去，将李卓群稳稳地背起，继续下楼撤离。跟随班级撤离的李凯楠目睹了这一幕，当即加入这场爱心接力。他紧跟在柴宇喆身后，双手紧紧托着李卓群提供支撑力量，确保安全。就这样，来自不同班级的申延辉、柴宇喆和李凯楠，完成了一次爱心护送。在他们的共同努力下，李卓群顺利撤离到操场。几位少年的勇敢和善良，引起网友众多点赞和评论。