There is no replacement for live animal tests at this point. There have been advances in cell models, but they are not a replacement for whole organism tests.

There is no replacement for live animal tests at this point. There have been advances in cell models, but they are not a replacement for whole organism tests. They are proxies for living organisms and often not very good ones. There is too much complexity in living organisms to be modeled. It's going to be that way for a long time.