一 | Breakthrough new research could significantly increase supply of organs for people with rarer blood types waiting for a transplant, reported The Guardian.,A team of scientists from the University of Cambridge have successfully altered the blood type of three donor kidneys. By flushing blood infused with a special enzyme through a human kidney the scientists removed the blood type markers lining the blood vessels of the organ.,The procedure required using a device that is connected with a donor’s kidney to pass oxygenated blood through it - a normothermic perfusion machine. As a result, the organ was converted to type O, considered the universal donor.,Blood Group Compatible,As the blood type of a donor must be compatible with the recipient’s, the new development could increase the supply of kidneys available for transplant.,A kidney from someone with blood type A cannot be transplanted to someone with blood type B, or visa versa. In such a case, the receiving body’s immune system would reject the new organ, interpreting the different blood type as foreign.,So changing the blood type to the universal O would mean the donor organ could be used for people with any blood type.,“Our confidence was really boosted after we applied the enzyme to a piece of human kidney tissue and saw very quickly that the antigens were removed. After this, we knew that the process is feasible, and we just had to scale up the project to apply the enzyme to full-size human kidneys,” Serena MacMillan, a PhD student at the University of Cambridge, said.,Scientists involved in the research, funded by charity Kidney Research UK and due to be published in the British Journal of Surgery, clarified that the outcome might have particular implications for minority ethnic groups.,Science & TechGood News for ABs: Scientists Can Now Change People's Blood Type21 February, 16:34 GMT,Some blood groups such as O Rh positive and B Rh positive are more prevalent among black, Asian and minority ethnic communities. To complicate matters further, some rare blood types are only found within the black, Asian and minority ethnic communities,This typically places them at a disadvantage, as they struggle to find a match. With low donation rates from these populations, stressed the researchers, sometimes such patients wait for as long as over a year for a compatible donor. They cited figures from 2020-21 showing that just over 9% of total organ donations in the UK came from black and minority ethnic donors. On the other hand, black and minority ethnic patients make up 33% of the kidney transplant waiting list.,“It’s very exciting to think about how this could potentially impact so many lives,” added Serena MacMillan.,The “potentially gamechanging” research was applauded by Dr Aisling McMahon, the executive director of research at Kidney Research UK.,The scientists will now test the reintroduction of other blood types and observe how the novel approach in clinical settings.。 8月11日8时，承德市公安局钢城分局滦阳派出所社区民警李嘉诚准时来到行宫社区，站在楼下，抬着头认真查看住户的窗户。看到几个重点关注的住户窗帘都拉开了，他心里才踏实，转身赶往另一个社区。
二 | 滦阳派出所管辖的四个社区均为建成多年的老旧小区，老龄化程度高，独居老人多。民警和社区干部在日常走访中时常遇到敲门无人应、打电话无人接的情况，实在让人揪心。为化解这一难题，李嘉诚想出一个办法。他与一些独居老人约定，早上拉开窗帘、晚上拉上。民警、网格员日常巡查抬头一望，通过一扇扇窗帘的开合，及时掌握老人居家状态。针对老年人生活和心理特点，滦阳派出所推出一批“适老”微警务措施。前不久，滦阳派出所警务室接到社区预警联动通报：社区一名老人疑似遭遇电信诈骗，揣着25万元现金准备在超市门口交给陌生人。民警立即驱车赶赴现场拦下老人，同时迅速布控，当场抓获诈骗嫌疑人。针对新型诈骗作案方式，派出所主动联系辖区银行、社区，建立大额取现预警联动机制。凡遇到可疑情况，第一时间联系民警。民警还常态化开展入户宣讲，织密反诈防护网，辖区电诈发案率显著下降。社区警务少有惊天动地的大事，却藏着千家万户的刚需。老年人遇到的各类生活难题更不容忽视，停水停电、管道故障、证明办理、便民咨询……这些细碎琐事，都是居民的心头事。去年冬天一个深夜，辖区一位独居老人家中暖气管突发爆裂，屋内积水遍地。慌乱之下，老人找不到抢修电话，只能报警求助。滦阳派出所值班民警李俊清快速赶到，关闭水闸、清理积水，全程帮老人对接供热站和维修人员，忙到凌晨才处置好。
三 | “当时我心里琢磨，许多老年人记不住各种维修电话，遇事就慌乱求助，我们必须把服务做在前面。
四 | ”李俊清说。此后一周，李俊清逐一核实收录开锁、维修、抢修等各类便民电话，筛选整理出最全的便民通讯录，同步转发到各个社区微信群，依托楼长、网格员逐户告知。为打通便民服务“最后一公里”，2025年12月，承德市公安局钢城分局上线“小钢警官”便民微信号，民警24小时轮班值守。不管是业务咨询、法律咨询，还是生活求助、问题反馈，居民随时可以私信留言，享受到快速响应的服务。截至目前，“小钢警官”微信好友数量已增加到近2000人。“我们的方法笨了些、土了些，但只要能守住社区的安宁，我们就要去做。
五 | ”承德市公安局钢城分局局长王占东说。（日报记者 陈宝云）。
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