When you say you like classical music, nine out of 10 people assume you mean stuff written by dead white guys. If you claim that you love contemporary classical, they'll probably assume you're talking about something like the orchestral re-interpretation of Sir Mix-a-Lot.
Adult stem cells. These stem cells are found in small numbers in most adult tissues, such as bone marrow or fat. Compared with embryonic stem cells, adult stem cells have a more limited ability to give rise to various cells of the body. Until recently, researchers thought adult stem cells could create only similar types of cells.
Embryonic stem cells, as their name suggests, are derived from embryos. Most embryonic stem cells are derived from embryos that develop from eggs that have been fertilized in vitro âin an in vitro fertilization clinicâand then donated for research purposes with informed consent of the donors.