Light micrograph of a section through the nasal septum, which divides the nose into two nostrils. The dark band across bottom is the bone of the septum. It is surrounded by connective tissue (red) in which blood vessels (blue) and mucous glands (grey) are embedded. Across top is the prismatic ciliated epithelium of the nasal mucosa. Magnification: x100 when printed at 15cm wide.