Your Query returns 39 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Tnnt3NM_01267610116Ctt    CTTG    RATCTTG    Tnnt2   
TNNT3AY1141448355
Tnnt3AB0855929913
Tnnt3AB0855939913
Tnnt3AB0855949913
Tnnt3AB0855959913
Tnnt3AB0855969913
Tnnt3AB0855979913
Tnnt3AB0855989913
Tnnt3AB0855999913
TNNT3AJ5663679823
TNNT3AJ5663689823
TNNT3AJ5663699823
Tnnt3NM_01162010090fTnT    600692
TNNT3AF0262769606600692
TNNT3AY3994329606600692
TNNT3AY3994339598
TNNT3AY39943410090600692
TNNT3NM_0067579606DA2B    FSSV    AMCD2B    600692
Tnnt3U7777910090600692
Tnnt3L4898810090600692
Tnnt3L4898910090600692
Tnnt3L4899010090600692
Tnnt3L4899110090600692
Tnnt3L4899210090600692
Tnnt3L4899310090600692
Tnnt3L4901810090600692
Tnnt3L4946610090600692
Tnnt3L4947010090600692
Tnnt3L4947110090600692
Tnnt3L4947210090600692
Tnnt3AF06011510090600692
Tnnt3L4946710090600692
Tnnt3L4946810090600692
Tnnt3NT_03943710090600692
Tnnt3L4946910090600692
Tnnt3BC00374710090fTnT    600692
TNNT3AF220158118013
TNNT3NT_0092379606600692

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

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Text2Knowledge ... Yong Huang 2002