Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
AILIMNM_01748010090H4    Ly115    Icos    604558
AILIMBC0280069606MGC39850    ICOS    604558
AILIMBC0282109606MGC39850    ICOS    604558
AILIMNM_0120929606MGC39850    ICOS    604558
AILIMBC03485210090Ly115    H4    Icos    604558
AilimNM_02261010116

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

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Text2Knowledge ... Yong Huang 2002