![]() All blood cells are formed in the bone marrow from a mother cell called the pluripotential stem cell (PSC). There are 3 main types of blood cells white blood cells (WBCs) also called leukocytes ('leuko' comes from the Greek word for white and 'cyte' refers to cells) red blood cells (RBCs), also called erythrocytes and platelets, also called thrombocytes. The plasma makes up ~55% of blood and it contains water (~90%), proteins, nutrients, hormones, chemicals, and waste products. The average adult human has about 5.5 L (~185 fluid ounces 1 gallon=128 ounces) of blood, made up of fluid (plasma) and cells. Today there is a much greater understanding of blood what it is, what it does, and where it comes from. Blood tests and blood cell cancers ( leukemia, lymphoma, myeloma, RBC cancers)īlood has been substance of great interest to humans throughout history and it was one of the elements in the 'Four Humors' theory of life developed by Hippocrates, known as the "Father of Medicine". ![]() This section contains information on blood, blood cells and common blood tests. Fluorescent In Situ Hybridization (FISH).Computed Axial Tomography (CT or CAT Scan).
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