Addendum%20to%20Chapter%2042%20Lecture%20Notes -...

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1 Pluripotent Stem Cells The Source of New Blood Cells Haemopoietic Stem Cells Pluripotent stem cells from bone marrow that differentiate into blood cells. Differentiate into different types of blood cells Figure 42.15 Differentiation of blood cells
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2 Control of erythrocyte production •A negative-feedback system – Dependent upon amount of oxygen reaching the cells • A hormone called erythropoietin is produced – Kidneys convert an inactive plasma protein to erythropoietin – Erythropoietin stimulates the production of
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Unformatted text preview: erythrocytes Stem Cell Research • Recent research has led to isolation and growth of pluripotent stem cells in the lab – May be useful to treat some human diseases • Leukemia (cancerous stem cells produce large numbers of abnormal leukocytes) • Experimental treatments include the removal and destruction of these cells (plus the marrow) – Transplant 30 or more non-cancerous pluripotent stem cells from lab culture – Those 30 cells can re-populate the entire marrow...
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Addendum%20to%20Chapter%2042%20Lecture%20Notes -...

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