Your Query returns 15 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Lmx1aNM_03365210090dr    sst    Lmx1.1    dreher    600298
LMX1AAH0115179606600298
LMX1AAY0783919606600298
LMX1AAY0783929606600298
LMX1AAY0783939606600298
LMX1AAY0783949606600298
LMX1AAY0783959606600298
LMX1AAY0783969606600298
LMX1AAY0783979606600298
LMX1AAY0783989606600298
LMX1ANM_1773989606LMX1    LMX-1    LMX1.1    600298
Lmx1aNT_07830610090600298
Lmx1aAF22666210090600298
LMX1ANM_1773999606LMX1    LMX-1    LMX1.1    600298
LMX1ANT_0046689606600298

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

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Text2Knowledge ... Yong Huang 2002