INDEPENDENCE DAY. On July 4, 1776, the thirteen colonies claimed their independence from England, an event which eventually led to the formation of the United States.
Polycythemia vera is a rare, chronic disorder involving the overproduction of blood cells in the bone marrow (myeloproliferation). The overproduction of red blood cells is most dramatic, but the production of white blood cells and platelets are also elevated in most cases.
There is one candidate gene that is implicated in the cause for polycythemia vera, the JAK2 V617F (jak-kinase 2 gene); however, there is still much research to be done to define its role in the disease. Unfortunately, I don't think I answered your question very well.