Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
SMNCNM_0228759606BCD541    C-BCD541    SMN2   
SMNCNM_0228769606BCD541    C-BCD541    SMN2   
SMNCNM_0228779606BCD541    C-BCD541    SMN2   
SMNCNM_0174119606BCD541    C-BCD541    SMN2   

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

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Text2Knowledge ... Yong Huang 2002