A standard protocol for phototoxicity testing. Results from an interlaboratory study
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Updated: Nov 7, 2026

LED-Based In Vitro Screening for Assessing Photoactivable Molecules in Bacterial Photodynamic Inactivation
Published on: January 24, 2025
R Nilsson1, T Maurer, N Redmond
1Department of Genetic and Cellular Toxicology, Wallenberg Laboratory, University of Stockholm.
Abstract:
Based on experience accumulated in a number of laboratories, a standardized protocol for phototoxicity testing in experimental animals by the dermal route is presented. By conducting a limited interlaboratory study, demonstrating a high degree of consistency using 8-methoxypsoralen (8-MOP) and acridine, the sensitivity and reproducibility of the proposed methodology is demonstrated. Important aspects of performing phototoxicity testing are discussed.
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