33.1 MB (3.3 MB compressed)
4026 x 2871 pixels
34.0 x 24.4 cm ⏐ 13.4 x 9.6 in (300dpi)
DON W. FAWCETT / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY DON W. FAWCETT / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY
Scanning electron micrograph of a blood vessel. A large venule is joined by a smaller tributary at upper right. Smooth muscle cells are more irregular in shape and are spaced farther apart than arterioles. Elements of the perivascular nerve net can be seen branching over the vessel.
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