Your Query returns 7 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
rnu2AJ0048275271
RNU2K022279606180690
RNU2AH0030229606180690
RNU2M192049606180690
RNU2M192059606180690
RNU2M192069606180690
RNU2BC0036299606U2    180690

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

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Text2Knowledge ... Yong Huang 2002