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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.
Most blood cells are made in your bone marrow. They are constantly being made and replaced. How long a cell lasts before being replaced is called its lifespan. Your blood is made up of 4 components: red blood cells, white blood cells, platelets, and plasma. Blood Components Red blood cells (erythrocytes) Red blood cells carry oxygen from your lungs to your tissues. They also bring carbon dioxide back to your lungs. Red blood cells make up about 44% of your blood. The lifespan of a red blood cell is around 120 days. White blood cells (leukocytes) White blood cells fight infection and help you develop immunity to disease. They make up less than 1% of your blood. There are 3 types of white blood cells: granulocytes, monocytes, and lymphocytes. Each type has specific functions. There are 3 subtypes of granulocytes: Neutrophils, which help fight bacterial and fungal infections. Basophils, which are associated with immune responses, although their exact function isnât well known.