Receptor fits in at least three different disciplines, including:
- "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
- "Immune receptor, a special case of biochemical receptor that occurs on the surface of immunocytes and binds to antigens."
Follow the link, below, to the Wikipedia Receptor disambiguation page.