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Representative photomicrographs of mutant colonies from the Ames test.
Notes: (A–C) representative photomicrographs of mutant colonies from the Ames test. (A) PC; (B) NC; (C) leach liquor of silica coating; (D) statistical results. **The number of mutant colonies of PC is above twice that of the other groups.
Abbreviations: S9, liver fractions of rats used for enzyme induction; NC, negative control; PC, positive control.
