Animal scientists are calling for mass vaccination of dogs as a way to get rid of rabies.

动物科学家呼吁进行大规模的狗类免疫，从而摆脱狂犬病。

Instead of animals, scientists are now testing on human tissues that are grown in a lab from embryo stem cells.

科学家们现在正在实验室中用胚胎干细胞培养的人体组织而不是动物进行测试。

Among the bones of hyenas, elephants, horse and other animals, scientists say they found the remains of nine Neanderthals or neandertalls, a type of primitive human.

在鬣狗、大象、马和其他动物的骨头中，科学家称，他们发现了九具尼安德塔人或穴居人的遗骸，这是原始人类的一种。