Your Query returns 10 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Tspan-2NM_01963410090A15    Mxs1    PE31    Cd231    TALLA    1200014P11Rik    Tm4sf2   
Tspan-2BC02651610090A15    PE31    TALLA    Cd231    Mxs1    Tm4sf2   
Tspan-2BC05860310090A15    PE31    TALLA    Cd231    Mxs1    Tm4sf2   
Tspan-2NM_02258910116Tspan2   
Tspan-2NW_04762710116
TSPAN-2AF0548399606
TSPAN-2NM_0057259606FLJ12082   
tspan-2AJ27144210116
TSPAN-2BC0216759606FLJ12082   
TSPAN-2NT_0192739606

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

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Text2Knowledge ... Yong Huang 2002