Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Abcc1aNM_00857610090MRP    Mrp1    Mdrap    Abcc1b    Abcc1   
Abcc1aNM_02228110116Mrp    Avcc1a    Abcc1   

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

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Text2Knowledge ... Yong Huang 2002