Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MT1bU112543702
mt1bX910783906
MT1BNM_0059479606MT1    MTP    156349
MT1BNT_0104989606156349

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

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Text2Knowledge ... Yong Huang 2002