Tooth enamel, SEM
Coloured scanning electron micrograph (SEM) of a section through tooth enamel. The enamel is the outer covering of the crown (visible part) of the tooth. It is the hardest substance in the human body. It is composed of rows of calcium and phosphorous salts embedded in a protein matrix. The picture was created as part of a cooperation with Quintessenz Publishing. Magnification: x10,000 when printed at 15cm wide., by EYE OF SCIENCE/SCIENCE PHOTO LIBRARY
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