Description : How do gram-positive and negative stains react differently to antibiotics?
Last Answer : The only thing that Gram- and Gram+ have to do with antibiotics is that each stain can give a clue as to which antibiotic might work against the microbe being stained. The outer membrane ... Penicillin, cloxacillin, and erythromycin should be enough to cover 90 per cent of Gram-positive infections.