Turns out, in the Russian city of Novosibirsk there's a monument dedicated to all the millions of mice who've perished in DNA tests throughout the history of science. Something like a Mice Holocaust Memorial
It's a lovely statue, commemorating a good cause, but at a great cost (for the mice). Some would argue the mice who live in captivity are actually provided with much better conditions than those living in the wild - others would argue that this is animal cruelty. Ultimately, it is certain that science has benefited a lot from these little creatures, and potentially, humankind as well.