: Specifically refers to antimicrobial substances naturally produced by microorganisms (like penicillin) or their semi-synthetic derivatives.
: Antibiotic-impregnated discs are placed on a bacterial "lawn." The resulting Zone of Inhibition (the clear area where no growth occurs) is measured to categorize the organism as Sensitive (S) , Intermediate (I) , or Resistant (R) . antimicrobic
This guide provides an overview of (antimicrobial agents), covering their definitions, how they are tested in clinical settings, and the principles for using them effectively to combat resistance. 1. Defining Antimicrobics covering their definitions