Kneecap - TEM

Transmission electron microscope image of a thin section cut through an area of bone marrow area near the cartilage/bone interface in a mouse kneecap. High magnification image of "Kneecap/marrow#79999- 2.6". 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

Image courtesy of Louisa Howard and Roy Fava.