Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
B70NM_01938810090B7    MB7    B7-2    CLS1    Ly58    Ly-58    Cd28l2    TS/A-2    Cd86   
B70BC0402619606CD28LG2    LAB72    B7-2    MGC34413    CD86   
B70NM_0068899606B7-2    LAB72    CD28LG2    MGC34413    CD86   
B70NM_1758629606B7-2    LAB72    CD28LG2    MGC34413    CD86   
B70BC01380710090B7    MB7    B7-2    CLS1    TS/A-2    Cd86   

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

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Text2Knowledge ... Yong Huang 2002