Size of zone of inhibition helps describe organisms

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size of zone of inhibition helps describe organisms as susceptible, intermediate or resistant to drug Commercial modifications of Susceptibility Testing→ are less labor intensive and often offer faster results. Different systems in existence for example: Small card with tiny wells containing specific antimicrobial concentrations determined growth rate via turbidity in cards. Determined MICs in 6­15 hrs E test→ a modification of disc diffusion test that uses a strip containing a gradient of concentrations of an antimicrobial drug. The intersection of zone of inhibition indicates MIC. Diffusion bioassay→ way to measure concentration of antimicrobial drug in blood/body fluids. Can produce a standard curve and the comparison can yield concentration. 11
UNIT 3­Module 10­Ch20: Antimicrobial Medications Describe four general mechanisms of antimicrobial resistance.
Describe how antimicrobial resistance can be acquired.

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