BIOL 221 Lecture Notes - Lecture 1: Leukopoiesis, Thymosin, Monocyte
10 Feb 2020
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Application #2: the young man who was in the car accident began running a fever after a few days in the hospital. The young man who was in the car accident (see slide 50) began running a fever after a few days in the hospital. Share your answers by posting on the discussion board. Leukopoiesis: all arise from hemocytoblasts, controlled by, cytokines, thymic hormones (thymosin, presence of antigens. As with all formed elements, formation of all types of leukocytes begins with hemocytoblasts. Leukopoiesis is controlled by chemicals called cytokines, thymic hormones (thymosin; important to t cell development) and the presence of antigens. Cytokines are molecules released by one cell that affect the growth or activity of another. Some hemocytoblasts become lymphoid stem cells that develop into lymphoblasts. After a few intermediate stages, the cells become lymphocytes. Myeloid stem cells can become proerythroblasts(eventually producing erythrocytes), megakaryoblasts (eventually producing platelets), monoblasts or myeloblasts. The latter two eventually produce monocytes or granulocytes.
