Questions - Stem Cell en-us http://www.thescizone.com/questions N/A http://www.thescizone.com/questions webmaster@thescizone.com 20 http://www.thescizone.com/questions/articles/32/1/What-is-a-Stem-Cell/1.html All mammals begin as two cells -- sperm and egg -- that combine into a single cell. This single cell will divide exponentially into specialized cells making up various organs and systems -- all the tissues of a new organism. Simply put, a stem cell is an immature cell that can become a different cell, or perhaps become one of many different cells. Most stem cells also can renew themselves -- divide -- indefinitely. These two characteristics are what present a new pathway to repairing damage to the human body caused by trauma, degeneration and disease. webmaster@thescizone.com (Super Admin) Fri, 19 Aug 2005 00:00:00 -0400 http://www.thescizone.com/questions/articles/33/1/What-happens-when-nerve-fibers-regrow/1.html The nerve cell body remains intact, and only the "sending" or "receiving" fibers have to regrow as longer extensions from the nerve cell body. The peripheral nerves, outside the brain and spinal cord can do this quite easily. But within the brain and spinal cord there is much impediment to such regrowth. webmaster@thescizone.com (Super Admin) Tue, 12 Jul 2005 00:00:00 -0400