Variables and their measures. Upper left - Staphylococcus aureus inhibited by amlodipine. A 5-mg capsule was opened and the content diluted in 1 mL of isotonic water; 40 µL of solution per pits. Serial ½ dilution and negative control (isotonic water). Lower left - Hemolytic properties of crushed amlodipine. Serial ½ dilution and negative control (isotonic water). Pure: diameter of hemolysis 11 mm around pits containing amlodipine solution (40 µL). Upper right - Crystal violet coloring of Streptococcus salivarius biofilm grown in microtiter plates. A darker purple color corresponds to a thicker biofilm in the pits. Lower right - XTT orange coloring of Candida albicans biofilm grown in microtiter plates. A darker orange color corresponds to a thicker biofilm in the pits.
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