30.1 MB (2.4 MB compressed)
2910 x 3611 pixels
24.6 x 30.5 cm ⏐ 9.7 x 12.0 in (300dpi)
PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY
Tracheal epithelium. False-colour scanning electron micrograph of the epithelium of the trachea (windpipe). It consists of a layer of pseudostratified ciliated cells (seen here as green grass-like hairs) interspersed with goblet cells (orange) which are covered by microvilli (small round dots). Goblet cells synthesise mucus, a viscous fluid, which is secreted through the microvilli and in which tiny particles in inhaled air are trapped. The ciliated cells move the mucus upwards and out of the respiratory tract keeping the lungs and airways free. Magnification: x4170 at 6x7cm size.
Model release not required. Property release not required.