JERRY MASON / SCIENCE PHOTO LIBRARY JERRY MASON / SCIENCE PHOTO LIBRARY
Bryostatin. Molecular computer graphic of the experimental anti-cancer drug bryostatin. Coloured lines represent the nuclei of different atoms: green = carbon; white = hydrogen; red = oxygen. Tiny coloured dots show the electron clouds around the atoms. Bryostatin is obtained from the invertebrate marine animal Bugula neritina, a type of bryozoan that forms mat-like colonies on the sides of boats and buoys. The drug has been undergoing clinical trials since 1989.
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