Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
GP180BC0142399606CD45    LCA    T200    LY5    B220    PTPRC   
GP180NM_0028389606LCA    LY5    B220    CD45    T200    PTPRC   
GP180NM_0809219606LCA    LY5    B220    CD45    T200    PTPRC   
GP180NM_0809229606LCA    LY5    B220    CD45    T200    PTPRC   
GP180NM_0809239606LCA    LY5    B220    CD45    T200    PTPRC   

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

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Text2Knowledge ... Yong Huang 2002