Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
SYN1BNM_02441410090Stx1b    Stx1b2   
SYN1bNM_0069509606SYNI    SYN1a    SYN1   
SYN1bNM_1334999606SYNI    SYN1a    SYN1   

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

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