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        | Vessel that carries lymph. |  | 
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        | Type of white blood cell characterized by agranular cytoplasm; usually constitute 20-25% of the white cell count. |  | 
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        | Large bone marrow cell that gives rise to blood platelets. |  | 
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 | Definition 
 
        | Type of white blood cell that functions as a phagocyte. |  | 
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 | Definition 
 
        | Phagocytic white blood cell that normally constitutes 60-70% of the white blood cell count. |  | 
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 | Definition 
 
        | The amount of pressure needed to stop osmosis; the potential pressure of a solution caused by nondiffusible solute particles in the solution. |  | 
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        | Disease-causing agents, such as bacteria and viruses. |  | 
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 | Definition 
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 | Definition 
 
        | Cell-like disks formed from fragmentation of megakaryocytes that initiate blood clotting. |  | 
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 | Definition 
 
        | Plasma protein made by the liver that must be present in the blood before clotting can occur. |  | 
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 | Definition 
 
        | Enzyme that catalyzes the transformation of the precursor prothrombin to the active enzyme thrombin. |  | 
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 | Definition 
 
        | Nonnucleated, hemoglobin-containing blood cell capable of carrying oxygen; erythrocyte. |  | 
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        | Enzyme derived from prothrombin that converts fibrinogen to fibrin threads during blood clotting. |  | 
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 | Definition 
 
        | Fluid found around tissue cells that contains molecules that enter from or exit to the capillaries. |  | 
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        | Term 
 | Definition 
 
        | Several types of colorless, nucleated blood cells that, among other functions, resist infection; leukocytes. |  | 
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