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Definition of ec50 in English English dictionary
- Effective concentration; the dosage at which the desired response is present for 50 percent of the population
- The molar concentration of an agonist, which produces 50% of the maximum possible response for that agonist
- The median effective concentration (ppm or ppb) of the toxicant in the environment (usually water) that produces a designated effect in 50% of the test organisms exposed
- The molar concentration of an agonist, which produces 50% of the maximum possible response for that agonist ED50 The dose of a drug that is pharmacologically effective for 50% of the population exposed to the drug or a 50% response in a biological system that is exposed to the drug Efficacy A term to describe the way in which agonists vary in the response they produce even when they occupy the same number of receptors