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Receptor may refer to:

  • Sensory receptor, in physiology, any structure which, on receiving environmental stimuli, produces an informative nerve impulse
  • Receptor (biochemistry), in biochemistry, a protein molecule that receives and responds to a neurotransmitter, or other substance
    • Cell surface receptor, a receptor on the outer surface of a cell membrane, that takes part in communication between the cell and the outside world
    • Nuclear receptor, a receptor found within cells that is responsible for sensing steroid and thyroid hormones and certain other molecules
    • Immune receptor, a receptor that occurs on the surface of immunocytes and binds to antigens
  • Receiver (radio), a device for the reception of electromagnetic signals