A susceptible cell lets the drug reach its target and act. A resistant cell fights back in one of four ways. It can destroy the drug, pump it out, change the target, or keep the drug out. Switch the defenses on, send in a drug, and watch the MIC climb from susceptible to resistant.
A drug meets the cellstep the drug in
The drug travels in from the top. Each defense you switch on gets drawn in place, so you can see exactly where the drug gets stopped.
All six drugs, these defensesMIC and verdict, live
S is susceptible. I is intermediate. R is resistant. The MIC is in relative units, and the breakpoint is the line the lab compares it to.