The dense region demarcating the thymus medulla from the surrounding cortex that is characterized by numerous blood vessels (predominantly arterioles) with some perivascular connective tissue, mature and immature T lymphocytes, dendritic cells, variable numbers of perivascular B-lymphocytes and plasma cells; site of entry of bone marrow stem cells and exit of mature, functional T cells. [ MP:0009543 ]

Synonyms: thymic cortico-medullary boundary thymus CMZ thymus cortico-medullary boundary thymic corticomedullary zone thymus corticomedullary junction thymus corticomedullary zone thymic corticomedullary junction thymic corticomedullary boundary

This is just here as a test because I lose it