Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
U5-63BCNR_0019337227K2    U5    dU5    snRNA3    snRNA4    CR32908    U5snRNA    snRNA:U5    U5snRNA63A    snRNA[[3]]    snRNA:U5:63BC   
U5-63BCNT_0374367227K2    U5    dU5    snRNA3    snRNA4    CR32908    U5snRNA    snRNA:U5    U5snRNA63A    snRNA[[3]]    snRNA:U5:63BC   

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

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Text2Knowledge ... Yong Huang 2002