Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Bmp2bNM_00755410090Bmp2b1    Bmp2b-1    Bmp4   
BMP2BBC0205469606BMP2B1    ZYME    BMP4   
BMP2BNM_0012029606ZYME    BMP2B1    BMP4   
BMP2BNM_1308509606ZYME    BMP2B1    BMP4   
BMP2BNM_1308519606ZYME    BMP2B1    BMP4   
bmp2b0N/Abmp2    bmp-2    cb670    zbmp2    bmp2-4    zbmp-2   

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

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