Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
sst2NM_00921710090SSTR-2    Smstr2    Smstr-2    Sstr2   
sst2AB0807981307
SST2U223824932
sst2NM_1317277955som    sst    smst    PPSS2   
sst2AB04729710116
sst2AF00891410090
sst2AF1395977957
SST20N/A

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

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Text2Knowledge ... Yong Huang 2002