Fig. 1. The colony counted to P. aeruginosa after photodynamic therapy (PDT) with 5-aminolevulinic acid (ALA) concentrations each 10, 5, 2.5, 1.25 mg/mL with irradiated 630 nm LED on suspensions. P-L-; Not treated bacterial suspensions, P-L+; Only irradiated to LED, 10~1.25; ALA concentrations each 10∼1.25 mg/mL with LED irradiated to bacterial suspensions.
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