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Histochemical analysis with 3,3′-Diaminobenzidine (DAB) as ROS indicator. Thallus of M. polymorpha grown in the absence and presence of anthracene. (A–D) are treatments without DAB staining, and (E–H) are the treatments with the DAB staining. Arrows indicate assays positive in the polymerisation of DAB in the presence of H2O2.
