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Cellular Receptivity

Meaning

Cellular receptivity defines the intrinsic capacity of a cell to recognize, bind, and respond to an external signaling molecule, such as a hormone or neurotransmitter. This fundamental biological property is governed by the presence, number, and correct spatial arrangement of specific receptors on the cell surface or within the cytoplasm. High receptivity indicates a cell is poised for a robust response to even low concentrations of a signaling molecule. Changes in cellular receptivity are central to conditions like insulin resistance or hormonal imbalances, directly impacting overall physiological function.