![]() The new understanding of stem cell has been applied to treat leukemia (induced differentiation) and bone/blood cancer (bone marrow transplants) for many years and has achieved great success. This concept has a great impact on the strategy of cancer chemotherapy and anti-cancer drug design. Based on current researches, adult stem cells appear to have a more restricted ability of producing different cell types and self-renewing compared with embryonic stem cells.Ĭancer stem cells are a sub-group of cancer cells that respond the escaping of cancer chemotherapy and the relapse of tumors. Adult stem cells are partially differentiated cells found among specialized (differentiated) cells in a tissue or organ. Embryonic cells derived from the part of a human embryo or fetus, are stem cells also with full potential to differentiation. Gametes cells (eggs or sperms) are stem cells they will develop to a whole body with various tissues after fertilizing. There are many types of stem cells, differing in their degree of differentiation and ability to self-renewing. The study of stem cells turns to be a major frontier in 21 century biology and medicine. In the battle to fight against diseases, stem cells present potencies to repair tissues by cell therapy and tissue regeneration. ![]() ![]() In science, it is still a challenge to understand how a fertilized egg to develop germ layers and various types of cells, which further develop to multiple tissues and organs with different biological functions. Stem cells are a group of cells in our bodies, with capacity to self-renew and differentiate to various types of cells, thus to construct tissues and organs. ![]()
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