LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Pain therapy, conceptual computer illustration. Syringe injecting a blue-green fluid into a human brain. This could represent the administration of an analgesic (painkilling) drug. Analgesic drugs work by inhibiting the sensitivity of nociceptors, the nerve endings commonly known as pain receptors, and the relay of pain signals throughout the central and peripheral nervous systems.
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