Treaty of Versailles
By: Wendy • Essay • 292 Words • December 14, 2009 • 719 Views
Essay title: Treaty of Versailles
Nearly everyone has heard of stems cells - the magical "every-cell" that promises to cure disease and deformities. Every human has stems cells. A stem cell from my body, for instance, can be coaxed into making kidney cells for your body! It is, however, extremely difficult to harvest stem cells from an adult human. The best source of stems cells is from a human embryo. And therein lays the debate.
Let's define what a stem cell actually is. The human body has 220 different types of cells. A stem cell is a type of cell that can be manipulated to develop into any of the 220 types of cells we can create within our bodies.
Stem cells are commonly extracted from unneeded human embryos. Usually, these embryos are the by-products of in-vitro fertilization. Typically, a woman gets a dozen or more eggs fertilized in attempts at artificial insemination. These eggs turn into embryos of about a dozen cells. These are actually "pre-embryos." They have no brain, lungs, nervous system, eyes, or any other recognizable human anatomy. What they