Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MpllgNM_00937910090TPO    TPO-1    TPO-2    TPO-3    TPO-4    Thpo    600044
MPLLGNM_0004609606ML    TPO    MGDF    MKCSF    THPO    600044
MPLLGNM_1992289606ML    TPO    MGDF    MKCSF    THPO    600044
MPLLGNM_1993569606ML    TPO    MGDF    MKCSF    THPO    600044

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

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Text2Knowledge ... Yong Huang 2002