Your Query returns 10 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Mgrn1NT_08235410090607559
Mgrn1NT_03962410090607559
Mgrn1BC04683010090607559
MGRN1NT_0105529606607559
MGRN1XM_0481199606607559
MGRN1NM_0152469606GP2B    CD41B    ITGA2B    RNF156    KIAA0544    607559
mgrn1NM_1998797955fi38c03    zgc:55978   
Mgrn1NM_02965710090md    nc    mKIAA0544    2610042J20Rik    607559
mgrn1BC0480697955fi38c03    zgc:55978   
MGRN1BC0503899606KIAA0544    GP2B    CD41B    ITGA2B    RNF156    607559

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

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Text2Knowledge ... Yong Huang 2002