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P(+)L(+), P(+)L(−), P(−)L(+), and P(−)L(−) stand for laser irradiation of each photosensitizer, photosensitizer alone, laser irradiation alone, and no treatment, respectively. Under the conditions of P(+)L(+) and P(+)L(−), the suspension contained 10 μM rose bengal, phloxine, or erythrosine. Each value represents the mean of nonuplicate determinations.
