Why do we use mice for research like trying to stop TMPRSS2 role in Sars-Cov-2. Are mice the best substitute for how this may effect humans?
Mice are cheap, are easily bred, and grow quickly. Scientist use animals like mice to test a substance on another mammal before trying it out on humans. I use zebrafish to test out substances. Zebrafish are actually becoming the model of choice for examining human diseases. Mice and zebrafish are not perfect models but they are a start.