美国旧金山加利福尼亚大学的科学家分离出一种能促进伤口愈合、难以捉摸的人体化学物质。这种物质叫做血管生成因子,是Zena Werb及同事在放射学和环境卫生实验室从兔伤口的液体中分离并部分提纯的。微量的这种因子,大约千万分之一克,能促进动物皮肤移植物的血管再生,并且能激发 Scientists at the University of California, San Francisco, have isolated an elusive human chemical that promotes wound healing. This substance, called an angiogenic factor, was isolated and partially purified from rabbit wound fluid by Zena Werb and colleagues in a radiology and environmental health laboratory. A trace amount of this factor, about one ten-thousandth of a gram, promotes angiogenesis in animal skin grafts and can stimulate