Your Query returns 20 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
mt2AAJ29943435632
MT2AAY1478179913
mt2aAJ31134255489
mt2aAJ31134355489
mt2aAJ31134455489
mt2aAJ31134555489
mt2aAJ31134655489
mt2aAJ31134755489
mt2aAJ31134855489
mt2aAJ31134955489
mt2aAJ31135055489
mt2aAJ31135155489
mt2aAJ31135255489
mt2aAJ31135355489
mt2aAJ511345112509
mt2aAJ24960355489
MT2AJ002719606156360
MT2ABC0070349606MT2    156360
MT2ANM_0059539606MT2    156360
MT2ANT_0104989606156360

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

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Text2Knowledge ... Yong Huang 2002