Your Query returns 16 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
erbB2S682569606164870
Erbb2NW_04733910116
Erbb2NM_01700310116
ERBB2AY2089119606164870
ERBB2M869109606HER-2    164870
ERBB2Y139649606164870
ERBB2NM_0044489606NEU    NGL    HER2    TKR1    HER-2    164870
erbB2L4723910090164870
erbB2U7112610090164870
Erbb2XM_10971510090164870
Erbb2NT_03952110090164870
Erbb2BC02708010090Neu    HER-2    c-erbB2    HER2    c-neu    164870
Erbb2BC04681110090Neu    HER-2    c-erbB2    HER2    c-neu    164870
Erbb2BC05307810090Neu    HER-2    c-erbB2    HER2    c-neu    164870
Erbb2BC06186310116
ERBB2NT_0107559606164870

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

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Text2Knowledge ... Yong Huang 2002