Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
U2snRNA39BNR_0016737227K6    U2    dU2    snRNA1    snRNA2    CR32882    U2snRNA    U2-38ABa    snRNA:U2    snRNA[[1]]    snRNA:U2:38ABa   
U2snRNA39BNT_0337797227K6    U2    dU2    snRNA1    snRNA2    CR32882    U2snRNA    U2-38ABa    snRNA:U2    snRNA[[1]]    snRNA:U2:38ABa   

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

Google

Text2Knowledge ... Yong Huang 2002