KSENIYA SHUTURMINSKA / SCIENCE PHOTO LIBRARY KSENIYA SHUTURMINSKA / SCIENCE PHOTO LIBRARY
Coloured scanning transmission electron micrograph (STEM) of an edge of a brushite crystal grown on a protein coated surface. Brushite is a precursor to apatite, the main mineral content of human bones and teeth. There's a lot of interest in understanding how apatite formation occurs so that it can be replicated to treat decayed tooth enamel.
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