Scanning electron microscopy studies of bone marrow.

摘要: This paper reviews scanning electron microscopy (SEM) observations of bone marrow, based on our findings the marrow rat femur and tibia. The sinuses are lined by an endothelium, which cell juncture is undulated overlapping. endothelium backed a thin sheet adventitial cells discontinuous because large perforations. Mature blood pass through parts then penetrate at its parajunctional zone. megakaryocytes reveal demarcation membrane system in their cracked surfaces, orifices surface. platelet liberation visualized bunch ribbons projected from megakaryocyte into sinus lumen; these become beaded separate platelets. After puncture perfusion parenchyme erythroblastic islands can be clearly demonstrated SEM. Erythroblasts with rhopheocytotic pits embraced nursing which, filopodia lamellipodia, corresponds to macrophage differs reticular cell. size island occasionally shows indications death. erythroblasts may uniform maturation stage or few different stages. Adipose observed relation discussed.