Stem cells are cells that can develop into many different types of cells. The document discusses sources of stem cells like bone marrow, umbilical cord blood, and embryonic stem cells. It provides information on Cryo-Save India which collects and stores umbilical cord blood and cord lining stem cells to be used for transplants and therapies. Cryo-Save India is part of a large international stem cell banking company and provides affordable stem cell storage and banking services in India.