Your Query returns 7 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
M1RNM_00769810090M1    Chrm-1    Chrm1   
M1RX6919810255
M1RY1678053258
M1RAF38013810244
M1RAY16018710244
M1RNC_00161110255
M1RNC_00331010244

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

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Text2Knowledge ... Yong Huang 2002