Candidate vaccines have to go through both animal trials and 3 human clinical trials before they are approved for distribution.

候选疫苗必须通过动物试验和3个阶段的人体临床试验，才能获准流入市场。

Did you happen to videotape any of your animal trials?

你有没有什么动物试验的录像？

Animal trials of the BioBag are still ongoing, and there are plenty of things they still want to iron out.

BioBag 的动物试验仍在进行中，他们仍然需要解决很多问题。

So it had gone to a lot of animal trials, it had gone to some very, very early human trials.

所以它进行了很多动物试验，它进行了一些非常非常早期的人体试验。

If this takes off it will please animal- rights activists, as it should cut down on the number of animal trials.

如果这种方法进展顺利，动物保护主义者会很高兴，因为它应该可以减少动物试验的发生。

And then we would start to take them through animal trials, clinical trials, and that would lead to some new treatments for brain cancer and for other things too.

然后我们将开始采用这些材料进行动物实验、临床实验，这就会生成对于脑癌以及其他疾病的新的治疗方案。