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Breeding Cancer-Proof Mice
Bob Vila's Hammer writes "In an article at New Scientist, research scientists at the Wake Forest University School of Medicine in North Carolina have been able to breed a cancer-proof mouse. The lucky new finds, some 700 cancer-proof mice, have the ability to destroy numerous different kinds of cancer cells in their bodies very efficiently without the use of T-cells (white blood cells). Instead the body's innate immune system attacks the tumor cells and ruptures them with neutrophils and macrophages. What is so astounding within early findings is that the power of these mice to resist cancer seems to be unlimited and as well, a genetic trait able to be passed down to further generations without the negative results of previous mouse breeds with autoimmune diseases."
We are evolved to be resistant to cancers. Our cells have many built in mechanisims to prevent and destroy cancerous cells.
Unfortunately, our body's mechanisms aren't quite good enough. But by that point in our life, we've already reproduced, and evolution can no longer help us.