30.2 MB (2.8 MB compressed)
3833 x 2756 pixels
32.5 x 23.4 cm ⏐ 12.8 x 9.2 in (300dpi)
NIGEL DOWNER / SCIENCE PHOTO LIBRARY NIGEL DOWNER / SCIENCE PHOTO LIBRARY
Light micrograph cross section of an artery and vein of a mammal. The large circular feature on the left is the artery, with the vein to its right. The thick area around the artery is the tunica media. Surrounding that is the tunica externa. The thin irregular ring in the centre is the tunica interna. Finally, the white space in the centre is the lumen.
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