The Center For Bioethics Human Dignity
January 2003

Instead of unethically inserting stem cells into embryos to see if the cells are pluriptential scientist have decided to first start with mice. Pluripotentiality is the ability of a stem cell to form many tissue types. Therefore testing in mice is important to see if the cells are even able to complete this process.

For twenty year, mice that contain human genes have been living in laboratory cages. However there are some technical problems, only a few human genes could be successfully inserted into the mouse genome without affecting the mouse, causing many problems. This process may allow fascinating things to happen if it develops, such as organs and such from mice. A sort of human-mouse chimera.

Kim Yost