Interesting tidbit is Bret Weinstein's finding how all mice used for drug testing all over the world were coming from a single source and because of how they we

Interesting tidbit is Bret Weinstein's finding how all mice used for drug testing all over the world were coming from a single source and because of how they were bred, they had very long telomeres which made them much less susceptible to cancer. Somebody got a Nobel for that, the situation supposedly has improved since, but a lot of assumptions (and substances approved) are still based on research which was using these mice.