CAVALLINI JAMES / BSIP / SCIENCE PHOTO LIBRARY CAVALLINI JAMES / BSIP / SCIENCE PHOTO LIBRARY
Clostridium botulinum bacteria (botulism bacillus). This bacterium secretes a powerful toxin which blocks the motor neurons responsible for muscle contraction. When injected locally this toxin (Botox) diminishes wrinkles by paralysing the muscles that cause them. Optical microscope x 2000.
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