Maybe 200, that's about how many different types of cells there are. Treatment varies greatly. Any cures will be fairly specific. Many are from various genetic mutations. Some are from local stem cells gone wild.
Redefining Disease, Genes and All
Scientists are finding that two tumors that arise in the same part of the body and look the same on a pathologists slide might be quite different in terms of what is occurring at the gene and protein level. Certain breast cancers are already being treated differently from others because of genetic markers like estrogen receptor and Her2, and also more complicated patterns of genetic activity.
A Disturbance in the Neighborhood
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