Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CD28LG2BC0402619606LAB72    B7-2    B70    MGC34413    CD86    601020
CD28LG2NM_0068899606B70    B7-2    LAB72    MGC34413    CD86    601020
CD28LG2NM_1758629606B70    B7-2    LAB72    MGC34413    CD86    601020

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

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Text2Knowledge ... Yong Huang 2002