Data items in the PDBX_EXPTL_SUBTYPE category record details about the method subtype under the primary method recorded in _exptl.method
_pdbx_exptl_subtype.exptl_method "ELECTRON CRYSTALLOGRAPHY" _pdbx_exptl_subtype.method_type "Microcrystal Electron Diffraction" _pdbx_exptl_subtype.details ?