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The identification of mature and immature blood cells in peripheral blood smears and bone marrow preparations is fundamental to the laboratory diagnosis of haematological disorders. Here, you may review the mature and immature white cells to gain more practice and confidence in their identification.
Bone marrow stem cells develop into red blood cells, white blood cells, and platelets. Certain white blood cells mature in the lymph nodes, spleen, and thymus gland. Matured blood cells have varying life spans. Red blood cells circulate for about 4 months, platelets for about 9 days, and white blood cells range from about a few hours to several days. Blood cell production is often regulated by body structures such as the lymph nodes, spleen, liver, and kidneys.