Your Query returns 17 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
IL12bAY37451099883
Il12bNM_00835210090p40    Il-12b    Il12p40    Il-12p40    161561
Il12bNW_04733410116
IL12bAY2342199555
IL12BAY0088479606IL12p40    161561
IL12BNM_0021879606CLMF    NKSF    CLMF2    NKSF2    IL-12B    161561
IL12BAF5126869606161561
IL12BAY0465949606161561
Il12bNT_03951510090161561
IL12BAJ54883431033
IL12BNT_0231339606161561
Il12bNM_02261110116Il12   
IL12BBC0675019606CLMF    NKSF2    CLMF2    NKSF    IL-12B    161561
IL12BBC0674989606CLMF    NKSF2    CLMF2    NKSF    IL-12B    161561
IL12BBC0674999606CLMF    NKSF2    CLMF2    NKSF    IL-12B    161561
IL12BBC0675009606CLMF    NKSF2    CLMF2    NKSF    IL-12B    161561
IL12BBC0675029606CLMF    NKSF2    CLMF2    NKSF    IL-12B    161561

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

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Text2Knowledge ... Yong Huang 2002