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1. The Microbiology Perspective: Antifungal & Antibiotic Disks

g/disk), certain antifungal agents like Nystatin or older antibiotics like Penicillin are often standardized by their biological activity in . ij disk

During an agar diffusion test, these paper disks are impregnated with a specific concentration (e.g., 100 IJ) of an antimicrobial agent. The disk is placed on an agar plate inoculated with bacteria or fungi. The "zone of inhibition" around the disk determines the effectiveness of the agent. ij disk