title: Electron paramagnetic resonance observations on biogenic semiquinone and 5-methyl phenazinium radicals.
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D004926:Escherichia coli / Q000378:metabolism; D005609:Free Radicals / Q000032:analysis; D010619:Phenazines / Q000032:analysis*; D011809:Quinones / Q000032:analysis*
chemical_list: D005609:Free Radicals; D010619:Phenazines; D011809:Quinones