Old brain (endodermal and old mesoderm) tissues respond to conflict by proliferating cells to assist with survival by creating more digestive or protective tissue.

In endodermal tissues (controlled from the pons of the brainstem), cells proliferate to create more peristaltic, resorptive, secretory, or excretory tissue in order to better claim, digest, and eliminate “morsels” (of food, water, air, light, and so on).

In old mesodermal tissues (controlled from the cerebellum), cells proliferate to create thicker, stronger corium skin in the location of an “attack.”

New brain (new mesoderm and ectoderm) tissues that respond to conflict with cell loss replenish the tissues in the healing phase with cell proliferation. In new mesoderm tissues, the healing phase cell proliferation almost always results in thicker, larger, and stronger tissue.

Cell proliferation is what is diagnosed as “cancer.”