Osteocytes
I believe it's immature bone because it has the mesenchyme cells, osteoprogenitor cells and osteoblasts. While mature bone has the osteocytes.
Mature bone cells are called osteocytes. These cells are responsible for maintaining bone tissue and regulating mineral content.
Osteocytes.
They are made in the bone marrow, but B cells mature in the spleen and T cells mature in the thymus.
Stem cells in a fetus mature in the yellow bone marrow.
T-lymphocytes are produced in the bone marrow from hematopoietic stem cells. They mature in the thymus, hence their name "T cells."
B cells and T cells both originate from the haematopoietic (or hematopoietic) stem cells located in the bone marrow. T cells mature in the thymus. B cells mature in the secondary lymphoid tissues (such as the spleen).
They both originate in the red bone marrow. B lymphocytes mature there. T lymphocytes mature in the thymus gland.
B cells are produced in the bone marrow and then they mature in the bone marrow as well. During the maturation process, B cells develop their antigen receptors and undergo selection to ensure they can recognize antigens effectively without causing autoimmune reactions.
Bone cells found in the lacunae within the matrix are called osteocytes. They are responsible for maintaining the bone structure and communicating with other bone cells to regulate bone remodeling and repair.
Baby Bones
The technical name for mature bone is compact bone. Compact bone is dense and strong, providing structural support and protection for the body.