Lymphocytes are the second most common white cells (20-40%) after neutrophils. They include:
– T-cells
– B-cells
– Natural killer Cells
Lymphocytes are increased in:
– Infections especially viral infections
– Medications
– Autoimmune disease
– Overactive thyroid
– Colitis
– Lymphatic leukemia
Lymphocytes are decreased in:
– Infections
– Medications such as steroids or chemotherapy
– Autoimmune disease
– Lymphoma
– Radiation therapy
– Sarcoidosis
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