Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
snRNA:U3NR_0016007227K7    dU3    snRNA2    snRNA3    CR31927    U3snRNA    U3snRNA22A    snRNA[[2]]    snRNA:U3:22A   
snRNA:U3NT_0337797227K7    dU3    snRNA2    snRNA3    CR31927    U3snRNA    U3snRNA22A    snRNA[[2]]    snRNA:U3:22A   

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

Google

Text2Knowledge ... Yong Huang 2002