pm_me_ur_demotape t1_itah4q8 wrote on October 22, 2022 at 3:23 AM

Reply to comment by veltcardio2 in Using a gel-like, radioactive implant, engineers have demonstrated the most effective treatment for pancreatic cancer ever recorded in mouse models, the new treatment completely eliminated tumors in 80 percent of mice across several model types, including those considered the most difficult to treat by giuliomagnifico

They sell mice and rats with various expected age of getting cancer on average. Tons of selective breeding to get there. That expected percentage of animals getting cancer at whatever age is the baseline they test these things on.
And like the other person said: mice and rats almost all get cancer eventually.