Phototoxicity
3T3 Neutral Red Uptake (OECD 432)
The 3T3 Neutral Red Uptake (NRU) Phototoxicity assay is a 96-well cytotoxicity-based assay that utilizes normal BALB/c 3T3 mouse fibroblasts to measure the concentration-dependent reduction in neutral red uptake by the cells after exposure to a test material either in the presence or absence of UVA light. Duplicate 96-well monolayers of 3T3 fibroblasts are exposed...
Tissue Models
The 3-D Phototoxicity assay uses 3-D reconstructed human epidermal (RHE) tissue constructs to evaluate the dermal phototoxicity potential of a test material. Toxicity is determined by measuring cytotoxicity [based on the relative conversion of MTT (3-[4,5 - dimethylthiazol-2-yl] - 2,5 - diphenyltetrazolium bromide)] in cultures treated with the test material in the presence or absence...