Fig. 6
From: The global variability of diatomaceous earth toxicity: a physicochemical and in vitro investigation
Cell viability of J774 macrophages exposed to DE. Cell viability relative to an untreated control (% of untreated control–positive control), measured by the alamarBlue® assay, of J774 macrophages exposed to 500 μg/ml of bulk (solid) or the fine fraction (hashed) of unprocessed (white), calcined (light grey) and flux-calcined (dark grey) DE, and positive (DQ12) and negative (TiO2) standards (black) for 24 h. No data for fine fractions of DE_11, DE_15 and DE_22. Error bars represent standard error (n = 4), *** p = <0.001 difference from untreated control