Blood is a liquid tissue that is pumped by the heart through the circulatory system. About 45% of the volume of blood is composed of cells; the remaining 55% is liquid plasma in which these cells are suspended. The percentage of blood volume occupied by packed cells, which is determined by centrifugation in a standardized tube, is the hematocrit. This volume varies widely in different diseases (Table 9.1, page 170).
KeywordsBone Marrow Scan Electron Micrograph Specific Granule Bone Marrow Disease Liquid Plasma
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