Your Query returns 25 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Mdh2BC06316510116Mor1   
Mdh2NM_03115110116Mor1   
MDH2AF3079955724
MDH2AF3087815732
Mdh2AF2486335759
MDH2M628084932
MDH2U404653055
MDH2U412934932
MDH2U429793055
MDH2Z748684932
mdh2BX927149196627
mdh2AE000750224324aq_1665   
mdh2AJ2427133708
mdh2AE000657224324aq_1665   
MDH2AF4596463870
MDH2AC0050779606154100
MDH2AC0063309606154100
MDH2BC0019179606M-MDH    MDH    MGC:3559    MOR1    154100
MDH2NM_0059189606MDH    MOR1    M-MDH    MGC:3559    154100
Mdh2BC02348210090MDH    154100
mdh2NC_000918224324
MDH2NT_0079339606154100
MDH2NT_0795959606154100
Mdh2NM_00861710090MDH    Mor1    Mdh-2    Mor-1    154100
MDH20N/A

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002