1. Stem cells
... important for living organisms for many reasons. As already mentioned, human stem cells are a new way of treating Alzheimer's disease as well as Parkinson's disease. Unlike muscle cells, blood cells, or nerve cells " which do not normally replicate themselves " stem cells may replicate many times. In the developing fetus, stem cells in developing tissues give rise to the multiple specialized cell types that ... other tissues. In some adult tissues, such as bone marrow, muscle, and brain, discrete populations of adult stem cells generate replacements for cells that are lost through normal...
- Word Count: 764
- Approx Pages: 3
- Grade Level: High School