_em_array_formation.id 1 _em_array_formation.type "2D-CRYSTAL" _em_array_formation.method . _em_array_formation.apparatus . _em_array_formation.atmosphere 'room air' _em_array_formation.pH 5.2 _em_array_formation.temp 18 _em_array_formation.time . _em_array_formation.buffer_id 2 _em_array_formation.details 'on grid' _em_array_formation.citation_id 2