Your Query returns 6 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CLS1NM_01938810090B7    B70    MB7    B7-2    Ly58    Ly-58    Cd28l2    TS/A-2    Cd86   
CLS1NM_01370610090B7    MB7    CAMPATH-1    Cd52   
CLS1BC01380710090B7    B70    MB7    B7-2    TS/A-2    Cd86   
CLS1BC02749510090B7    MB7    CAMPATH-1    Cd52   
CLS10N/ACRD1   
cls1U5385810116

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

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Text2Knowledge ... Yong Huang 2002