| potassium-sparing d.’s |
a class of drugs that block the exchange of sodium for potassium and hydrogen ions in the distal tubule, causing an increase in the excretion of sodium and chloride with a negligible increase in potassium excretion; used in the treatment of edema and hypertension, usually as adjuncts to enhance the action and counteract the kaliuretic effects of thiazide and loop diuretics, and in the prophylaxis and treatment of hypokalemia.
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| potato blood agar |
Bordet-Gengou a.
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| potato dextrose agar |
a culture medium containing potato infusion and glucose (dextrose), for culturing and inducing sporulation in molds.
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| potato t. |
carotid body t.
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| potency |
1. the ability of the male to perform sexual intercourse. 2. the relationship between the therapeutic effect of a drug and the dose necessary to achieve that effect; a drug with a higher potency will require a smaller dose to produce a given effect. Clinically, potency has little use except as a means to compare the relative activities of pharmaceutic agents. Cf. efficacy. 3. the ability of an embryonic part to develop and complete its destiny.
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