- Hematon
The hematon was first defined in
1988 as the primary fundamental unit ofhaematopoiesis , the formation ofblood cells.The hematon is believed to be a low density multicellular
spheroid approximately 100-500micrometre s in diameter. These cells are arranged into a complex 3-D network and surround a system of highly vascularised and arbourised fibrous cords which run throughout the structure. The spheroid is composed of a central core ofadipocyte s/preadipocyte s cells,mesenchymal cell s,recticular cell s andmacrophages . This core is surrounded by a peripheral layer ofmyeloid ,erythroid andmegakaryocyte progenitor cells and their progeny.
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