1. By: Aaron Mills

2. How stem cells are retrieved A typical day-5 human embryo consists of 200-250 cells Only about 30-34 of these cells are usable HESCs are harvested from the inner cell mass of the blastocyst The derivation of HESC cultures requires the removal of the trophoblast This process of disaggregating the blastocyst's cells eliminates its potential for further development

3. What are stem cells used for Stem cells are used to replace infected cells.

4. THEY CAN CURE MANY DISEASES. THEY HELP SCIENTISTS DEVELOP NEW MEDICINES.

5. My Opinion It is morally impermissible to intentionally kill the human embryo.