It will be a while before a technique Johns Hopkins bioengineers have developed for cartilage repair reaches clinical medicine, but results from animal studies look promising for one of the nagging problems of elders: joint pain. Researchers used a process called electrospinning to create a 3-D scaffold from protein fibers into which they implanted goat bone marrow stem cells.  This triggered type 2 collagen production which, in turn, generated chondrocyte growth.   MORE