Fig. 3From: Surface chemistry modified upconversion nanoparticles as fluorescent sensor array for discrimination of foodborne pathogenic bacteriaa Fluorescent response of UCNPs@COPs probes treated with alive and death E. coli (OD600 = 0.5). b Fluorescent response of UCNPs@COPs probes treated with alive and death S. aureus (OD600 = 0.5). c Fluorescent response of UCNPs@COPs probes treated with alive E. coli and S. aureus (OD600 = 0.5)Back to article page