Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MHS1AC0679699606CCO    MHS    RYR    RYR1   
MHS1NM_0005409606CCO    MHS    RYR    RYDR    RYR1   

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

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Text2Knowledge ... Yong Huang 2002