[lil fu fu girl]

"So, if you're wondering how microchips could be harmful, the answer is that they can cause inflammation, fibrous tissue growth, and are implanted via injections, a method that is already known to increase the sarcoma risk. Then, add the fact that implanted foreign bodies are known to increase the risk of cancer. It follows that we have good reason to be cautious about microchip implantation.

When people want to dismiss out of hand the idea that there may be a cancer risk in implanting microchips, they should think about the many years that vaccines were given to cats before the issue of injection-site sarcomas was recognized and understood to be a risk."
S. Pober/Canine Cancer.com/blog