Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
21-OHNM_0099951009021OH    21OHA    Cyp21    Oh21-1    CYP21OH-A    Cyp21a1   
21-OHNM_05710110116Cyp21    Cyp21a1   

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

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Text2Knowledge ... Yong Huang 2002