Receptor

• Usually a receptor is something that receives something from a donor.
• In a sensory system, a receptor is a structure that recognizes a specific signal affecting any one of our five senses; smell; hearing; taste; touch or light.
• In proteomics a receptor is a protein on the cell membrane or within the cytoplasm that binds to a specific factor, such as a drug, hormone, antigen, or neurotransmitter.

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