Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Cd40lNM_01161610090IGM    IMD3    Ly62    TRAP    gp39    CD154    HIGM1    Ly-62    T-BAM    CD40LG    Tnfsf5   
CD40LAF1402539606TNFSF5   
CD40LNM_0000749606IGM    IMD3    TRAP    gp39    CD154    HIGM1    T-BAM    CD40LG    hCD40L    TNFSF5   
CD40LAB0404439823
CD40LAF0867119615
CD40LAH01285827606
CD40LAY19679827606
CD40LAY19679927606
CD40LAH0128599715
CD40LAY1968009715
CD40LAY1968019715
CD40LX6545310090

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

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Text2Knowledge ... Yong Huang 2002