The pA value for a drug-receptor pair. (choose best answer) O indicates concentration at which the drug binds 50% of available receptors. O will depend on what agonist was used in the experiment. O...

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Extracted text: The pA value for a drug-receptor pair. (choose best answer) O indicates concentration at which the drug binds 50% of available receptors. O will depend on what agonist was used in the experiment. O will have a smaller numerical value if the affinity is greater. O will not be affected by changing the drug's molecular structure. O none of these