> Are tumoral mammal cells integrated by humans when infested raw?

In humans eating another species? It seems unlikely, but ingestion of live cells is one of the mechanisms have been proposed for the transmission of Devil Facial Tumour Disease, in which live cancer cells are transferred between individual Tasmanian Devils.

(just so you know before clicking it's pretty nasty) https://en.wikipedia.org/wiki/Devil_facial_tumour_disease