Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
nAcRbeta-21CAJ3187617227
nAcRbeta-21CAY0616227227
nAcRbeta-21CAE0035897227
nAcRbeta-21CNM_0803597227nAChR    Dbeta3    CG11822   
nAcRbeta-21CNM_1643867227nAChR    Dbeta3    CG11822   
nAcRbeta-21CNT_0337797227nAChR    Dbeta3    CG11822   

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

Google

Text2Knowledge ... Yong Huang 2002