Animal models for human diseases is nothing new. Animal studies are required prior to human studies. The most recent PDUFA update does promote research into non-animal pharmtox possibilities. But animal studies aren't going to be replaced any time soon. Again, these are required by FDA (and other health authorities) prior to being able to test new drugs in humans.
However I guess we can now add younger dogs to the millions of mice who have had cancer cured.
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