Stem+Cells

=__**Stem Cell Research**__=

Stem cells are used in research and clinical applications. It is said that they're relatively unspecialized cells that, when they divide, can do two things: make another cell like itself, or make any of a number of cells with more specialized functions. They serve as a repair system for the body. A rich source of stem cells would be the bone marrow, and the second source would be the umbilical cord. Since stem cells can only transform once, they would have to stay like that which can produce problems. = = == = = = = =__**Types of Stem Cells**__=

1.) //Embryonic stem cells://

 * =====Eventually give rise to all the different kinds of specialized cells of the body.=====
 * Can preserve themselves indefinitely (they are immortal under the right conditions)

media type="youtube" key="-FfO_3xyrmU" height="315" width="420"
 * Video explains the basics on how embryonic stem cell lines are made.

2.) //Somatic (adult) stem cells://
 * Cells represent in adult tissues that generate replacements for non-dividing differentiated cells. (To maintain and repair tissues)

== =__**Diseases/Infections**__= Stem cells can help cure many types of disease/infections, including:
 * Heart disease
 * Parkinson's
 * Diabetes
 * Alzheimer's disease
 * Stroke
 * Arthritis
 * Burns
 * Spinal cord damage



=__Controversy__= There is a great deal of controversy surrounding stem cell research because ES stem cells are the most versatile, durable cells, but they are obtained from aborted human fetuses.

The only known way to obtain unlimited stem cells is by using days old embryos from fertility clinics that would otherwise be discarded. Though these embryos have never been in the uterus and have never become a fetus, some people are opposed to this research because they consider this embryo to be morally equivalent to a human being.

Now, on the other hand, the use of adult stem cells is less controversial since it does not kill human or potential human. However, adult stem cell research is significantly behind embryonic stem cell research because of availability and versatility of adult stem cells.

Finally, it leaves a question of embryonic stem cell harvesting. The United States believes that embryos are not people to prevent abortions, yet the government gives special or favored treatment to pre-embryos.

Furthermore, if these stem cells are going to be destroyed anyways, it's possibly best to use them to help save and improve lives.