igure 20.2 Papulopustular lesion on forearm of patient, which developed subsequent to use of loofah sponge overgrown with Ps,aeniginosa igure his electro 绿假单胞菌 (绿胞杆菌 igure 20.3 An antimicrobic sensitivity test of Pseudomonas aeniginosa reveals traits ypical of the species. The plate on the left shows its multiple resistance to drugs and the blue-green pigment that diffuses into the medium.A plate of Staph ylocos aureus is shown on the right for comparison铜绿假单胞菌 （绿脓杆菌）