giving rise to virtually any cell type. Research on these primordial cells will also provide a unique opportunity to study human cell biology. Adult stem cells, obtained from mature tissues, differentiate into a narrower range of cell types. As a

Gonadal Cell Therapy Gonadal cell therapy involves manipulating the genes in the reproductive organs (gonads). It differs from somatic cell therapy (cells not involved in sexual reproduction) in that any changes made to genes in

1971. Limited types of stem cell therapies are already in use. The most well-known therapy is the stem cell transplant (a form of a bone marrow transplant) for cancer patients. In this therapy, stem cells that can give rise to blood cells (red and

development of techniques of gonadal cell therapy to make genetic corrections in the reproductive tissues of prospective parents long before conception takes place—that is, gametocyte therapy . Other issues, such as the criteria for genetic