title: Determination of the zero-field splitting in human acid methemoglobin by millimeter and submillimeter ESR experiments.
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007501:Iron; D008433:Mathematics; D008706:Methemoglobin
chemical_list: D008706:Methemoglobin; D007501:Iron