Your Query returns 16 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
B23NM_00872210090NO38    Npm1   
B23BC0036709606NPM    NPM1   
B23BC0219839606NPM    NPM1   
B23BC0216689606NPM    NPM1   
B23BC0125669606NPM    NPM1   
B23BC0143499606NPM    NPM1   
B23BC0167169606NPM    NPM1   
B23BC0084959606NPM    NPM1   
B23BC0168249606NPM    NPM1   
B23BC0023989606NPM    NPM1   
B23BC0506289606NPM    NPM1   
B23BC0167689606NPM    NPM1   
B23BC0096239606NPM    NPM1   
B23NM_0025209606NPM    NPM1   
B23NM_1991859606NPM    NPM1   
B23BC05475510090NO38    Npm1   

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

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Text2Knowledge ... Yong Huang 2002