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.
Discovered in the 1960s, blood stem cells (haematopoietic stem cells) were the first stem cells to ever be discovered. Blood stem cells primarily reside in bone marrow and make all the cells found in blood, including cells important for the immune system. Transplants of blood stem cells have become widely used to treat diseases such as leukaemia, anaemia and autoimmune diseases.