Total Magnification = 400x
Objective Magnification = 40x
Key
L = Lumen
EN = Elongated Nuclei elonging to endothelial cells
SM = Smooth Muscle
A = Arteriole
Histo-Tips: If you are disoriented looking at a slide, try to find a luminal space lined by a recognizable layer of epithelial cells to help find your place.