Synthetic blood clots snap cells together to staunch bleeding — fast

Natural blood clots, which include platelets (light blue clumps) and red blood cells in a fibrin mesh, can take minutes to form. Credit: Anne Weston, EM STP, The Francis Crick Institute/Science Photo Library Red blood cells modified with Nobel-prizewinning chemistry can snap together to form clots that staunch bleeding in seconds. That’s according to a study, published on 29 April in Nature 1 , that tested the technology in rats. …