The mechanism of action of AVEC relies upon the immunity acquired through vaccination or natural illness against microbials (e.g., viruses, bacteria, etc.) being redirected, amplified, and accelerated against the cancer cells. For example, a person vaccinated against hepatitis B virus, but suffering from HER2+ breast cancer receives AVEC, consisting of the antibody against HER2 and vaccine against HBV (AVEC: anti-HER2 - HBV). Since this persons immune system has already prepared a response to the HBV virus, it will instantly attack any cell tagged by it, in this case the breast cancer cells, overexpressing HER2. As such, AVEC attracts the components of the immune response like a lightning-rod attracts the thunderbolts during storms.