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Large vein (vena cava)

These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x

Tunica intima <p>These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right).  Note the reversed orientation of the smooth muscle fibers.  H & E stain (left), elastin stain (right), 250x </p>

Tunica intima

These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x

Tunica media <p>These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right).  Note the reversed orientation of the smooth muscle fibers.  H & E stain (left), elastin stain (right), 250x </p>

Tunica media

These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x

Tunica adventitia <p>These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right).  Note the reversed orientation of the smooth muscle fibers.  H & E stain (left), elastin stain (right), 250x </p>

Tunica adventitia

These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x

Image source > <p>This image was taken of a slide from the Drexel University slide collection.</p>

Image source >

This image was taken of a slide from the Drexel University slide collection.