Category: Diagnosis
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Neutrocytopenia
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Neutrophils (granulocytes) are the body’s main defense against bacterial infections and fungal infections. When neutropenia is present, the inflammatory response to such infections is blunted. The normal lower limit of the neutrophil count (total white blood cell count × % neutrophils and bands) is 1500/mcL (1.5 × 109/L) in White patients and is somewhat lower in Black patients (approximately 1200/mcL [1.2 × 109/L). Neutrophil counts…
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Lymphocytopenia
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Lymphocytes are components of the cellular immune system and include T cells, B cells, and natural killer (NK) cells, all of which are present in the peripheral blood; approximately 75% of the lymphocytes are T cells, 20% B cells, and 5% NK cells. Because lymphocytes account for only 20 to 40% of the total white blood…