Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Tnni2BC0478577955MGC56294    zgc:56294   
Tnni2NM_2010937955MGC56294    zgc:56294   
Tnni2NM_00940510090191043
Tnni2NW_04756310116
TNNI2BC0321489606AMCD2B    DA2B    FSSV    191043
TNNI2AJ2457619606191043
TNNI2NM_0032829606DA2B    FSSV    AMCD2B    191043
Tnni2NT_03943710090191043
Tnni2BC02851510090191043
TNNI2NT_0092379606191043
Tnni2NM_01718510116
Tnni2NM_2057427955

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

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Text2Knowledge ... Yong Huang 2002