You won't find any scientific papers specifically saying cancer because the only papers (in any industry) are the ones that that owner (the company) can profit from. I don't think I need to go into how every company for the last 100 years have been doing this.

The reason they don't have to specifically say it's cancer it's because of a legal loophole. It's the same reason delta 8 thc can be sold in gas stations but delta 9 is federaly illegal, or how docs can give out percs, oxys, etc but not heroine

Stem cells aren't really cells per say, they're more of a blank canvas that can be turned into whatever cell they want... the issue tho: stem cells are EXPENSIVE. doing some rough math, the average placenta can cost 30-50,000 dollars, which can hold 10-50 million stem cells, an 8-ounce steak roughly contains about 289 million cells. So assuming every since stem cell was successfully turned into meat that would mean an 8oz steak would cost 46,136,100,300,000,000,000 USD. Also this doesn't take into account growth time. So instead they use cancer cells to try to simulate meat since cancer cells grow 3x faster and with less maintenance, which is saving them an incomprehensible about of money

At the end of the day, it's the same legal loophole they use to sell delta 8 in gas stations, while delta 9 is on the same level as heroine