Question: Which of the following methods includes adding broth to test tubes with varying amounts of a drug to determine antibacterial potency? An Etest A macrobroth

Which of the following methods includes adding broth to test tubes with varying amounts of a drug to determine antibacterial potency?

An Etest

A macrobroth dilution assay

The 96-well microdilution tray method

The Kirby-Bauer disk diffusion method

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