“The team induced the formation of oral cancer (specifically, squamous cell carcinoma) in hamster cheek pouches by rubbing them with a carcinogen called DMBA. After about 22 weeks, tumors (without capsules) formed.”
Seems that they are able TO GIVE living things cancer quite easily. Rub a little substance here or there, and next thing ya know, cancer.
There has been a rabbit study on bed sores—same effect.