Featuring Demian Dressler, DVM and Susan Ettinger, DVM, Dip. ACVIM (Oncology), authors of The Dog Cancer Survival Guide

Initiation Definition

Initiation: According to the genetic mutation theory of cancer, initiation is the first stage of cancer development. In this stage, a cell’s DNA is damaged beyond repair, often including the DNA involved with apoptosis (natural cell death).

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