• Granulocytes lymphocytes wks or month

4-8hrs in circulationAnother 4-5days in tissuesMonocyte10-20hrs in bloodLive for months in tissues as tissue macrophages

Lymphocytes Weeks or months continually circulate

between lymphoid tissue ,blood, tissue, lymph and then blood again

Life span of white blood cells

• Disorders of Leukocyte• LeucopeniaIrradiation of body by x-rays or gamma raysExposure to drugs or chemicals such as chloramphenicol, thiouracil

• Leukemia'sLymphocytic leukemiaMyelogenous leukemia• Effects on the bodyDevelopment of infectionSevere anemiaBleeding tendencyTissue debility with depletion of energy