Fig. 5From: A systematic quality evaluation and review of nanomaterial genotoxicity studies: a regulatory perspectiveResults of the in vivo genotoxicity assay-specific evaluation. The percentage and number of assays (out of the total number of each specific type of assay) that fulfilled the assay-specific criteria is presented in each bar. Results from the erythrocyte Pig-a gene mutation assay are not shown in the figure (0 out of total 3 tests were acceptable for metal-containing nanoparticles (NPs), whereas no tests for nanofibers were retrieved in the literature search)Back to article page