Yes, and in fact it was Australian stem cell scientiss who were successful in the use of blood forming stems in bone marrow transplantation, which has saved many lives over the past 50 years. This treatment is known as a bone marrow transplant, and you may heard of proceudre being used to treatment some forms of leaukaemia.
Besides bone marrow transplants, stem cells found in the skin and cornea of the eye have also been used successfully in skin grafts and corneal grafts. In all these instances the stem cells are already committed to producing the cells of the tissues which is damaged – ie they are doing the repair job that they are already programmed to perform.