This is not the first attempt at immunocontraception, Benoff said. 这并不是第一次针对免疫避孕的尝试。
O'Rand's group is trying an alternative approach called immunocontraception, which tries to have the immune system attack sperm and render them incapable of fertilization. 欧兰德的小组正在尝试另一种免疫避孕法，就是试图促使男性的免疫系统破坏精子，使其暂时失去生育能力。
