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-Lord Macartney and Emperor Qianlong
Down-Regulation
A biological process where the number of receptors or the sensitivity of a cell to a molecule decreases in response to an external factor.
Insensitivity
A lack of sensitivity or responsiveness to stimuli or inputs, whether emotional or physical.
Receptor Molecules
Specialized proteins located on or within cells that bind to specific substances, triggering cellular responses.
Chemically Altered
A term describing a substance whose chemical composition has been changed through a reaction or process.
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