other diseases which have took over the immune system. Platelets, along with other proteins, form blood clots. When blood is exposed to air, platelets become sticky and for internal and external “scabs” to catch the blood cells and plasma, upon stopping bleeding. Human blood is grouped into four types: A, B, AB ,and O. Each letter refers to a kind of antigen on the surface of the red blood cells. Each blood type is also grouped by Rhesus Factor (Rh Factor). Blood is either Rh positive (Rh +) or…
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