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.
There are several sources of stem cells. Pluripotent stem cells can be isolated from human embryos that are a few days old. Cells from these embryos can be used to create pluripotent stem cell lines âcell cultures that can be grown indefinitely in the laboratory.Pluripotent stem cell lines have also been developed from fetal tissue (older than 8 weeks of development).In late 2007, scientists identified conditions that would allow some specialized adult human cells to be reprogrammed genetically to assume a stem cell-like state. Pluripotent stem cells can give rise to any type of cell in the body except those needed to support and develop a fetus in the womb. 2  Stem cells that can give rise only to a small number of different cell types are called multipotent.