what part of a human bone contains stem cells?

Stem cells in human bones are primarily found in the bone marrow. Bone marrow is the soft, spongy tissue inside most bones that contains two types of stem cells: hematopoietic stem cells, which produce blood cells, and mesenchymal stem cells, which can differentiate into bone, cartilage, and fat cells. Specifically, the bone marrow stroma houses the mesenchymal stem cells, while hematopoietic stem cells are abundant in the red bone marrow, the site of blood cell formation. Thus, the part of a human bone that contains stem cells is the bone marrow located within the spongy or cancellous portion of the bone, especially in areas like the hip bones, ribs, vertebrae, sternum, and pelvis.