Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
wu:fi24f03BC0453287955fi24f03    Ptpn11    zgc:55388   
wu:fi24f03NM_1998467955Ptpn11    fi24f03    zgc:55388   

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

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Text2Knowledge ... Yong Huang 2002