Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Il-12p40NM_00835210090p40    Il-12b    Il12p40    Il12b   
IL-12p40AB08579210036

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

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Text2Knowledge ... Yong Huang 2002