Keywords: Blood cell crossing vascular sinus wall - TEM.jpg Transmission electron micrscope image of a thin section cut through an area of bone marrow area near the cartilage/bone interface in a mouse kneecap Image shows small opening in the thin endotheliun of the vascular sinus wall where a blood cell is crossing the thin vascular sinus wall and into the sinus lumen JEOL 100CX TEM http //remf dartmouth edu/imagesindex html http //remf dartmouth edu/images/mammalianKneecapTEM/source/2 html Louisa Howard Roy Fava PD Louisa Howard and Roy Fava Cell biology |