Figure 1.

Phage activity against S. aureus, E. coli, and P. aeruginosa (ATCC or MDR strains). Bacteriophage activity was verified by spot tests. Briefly, after suspension in soft agar, bacterial cultures were overlaid on TSA plates; serially diluted phage stocks were added to bacterial lawns, checking their lytic activity after 24 hours of incubation at 37°C. Results are representative of triplicate samples.

Abbreviations: ATCC, American Type Culture Collection; MDR, multidrug-resistant; TSA, tryptic soy agar; CTR, control.