Your Query returns 26 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CHRM2M164049606118493
CHRM2AB0413919606118493
chrm2NM_1783017955
CHRM2AB0413929598
CHRM2AB0413939593
CHRM2AB0413949600
Chrm2NW_04768910116
CHRM2U198009606118493
CHRM2AY0346039606118493
CHRM2AY0346049606118493
CHRM2AY0346059606118493
CHRM2AY4561259606118493
CHRM2AY4561269606118493
CHRM2AY4561279606118493
CHRM2AY4561289606118493
CHRM2AY4561299606118493
CHRM2AJ0110419606118493
CHRM2AF3855889606118493
CHRM2AF4989169606118493
CHRM2NM_0007399606HM2    118493
CHRM2AF07911210047
CHRM2G182839606118493
CHRM2NT_0079339606118493
CHRM2NT_0795969606118493
Chrm2NM_03101610116
Chrm2NM_20349110090M2    Chrm-2    118493

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

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Text2Knowledge ... Yong Huang 2002