BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Scanning electron micrograph (SEM) of the surface of a molar tooth. The molars are broad ridged teeth found at the back of the jaws of mammals. The ridges allow them to be used to chew and grind up food. Magnification approximately 20x at 5x7 inches.
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