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The spleen receives blood from an artery off of the aorta. After passing through an intricate meshwork of tiny blood vessels, the blood continues to the liver. The blood vessels of the spleen are surrounded by nests of B lymphocytes - mainly of the memory type. As the blood slowly moves through the spleen, it is monitored by T-cells for any non-self invaders. If some suspicious cell or molecule is detected, it is presented to the resident B-cells for a match to an appropriate memory B-cell. Once a matching B-cell is activated, the cell divides rapidly and begins producing antibodies directed against the invading antigen.
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Sounds like the perfect resume for a mid-level government bureaucrat.
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"Regret can be a harder pill to swallow than failure .With failure you at least know you gave it a chance..." David Howard
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