Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CD28LG1BC0426659606CD28LG    LAB7    CD80   
CD28LG1NM_0051919606LAB7    CD28LG    CD80   

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

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Text2Knowledge ... Yong Huang 2002