There are 2 main types of Stem Cells thats are considered to be the most promising adult stem cell types for developing cell- or gene-based therapies: Hematopoietic and Mesenchymal stem cell.
Hematopoietic Stem Cells (HSCs) can develop into all types of blood cells, like white blood cells, red blood cells, and platelets. They are found in the peripheral blood and the bone marrow and are called blood stem cell.
Mesenchymal stem cells (MSCs) are adult stem cells traditionally found in the bone marrow and fat cells. However, mesenchymal stem cells can also be isolated from other tissues including cord blood, peripheral blood, fallopian tube, and fetal liver and lung. Multipotent stem cells, MSCs differentiate to form adipocytes, cartilage, bone, tendons, muscle, and skin.