Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Npy4rNM_00891910090Y4    NYYR-D    Ppyr1    601790
NPY4RAY2684329606PPYR1    601790
NPY4RNM_0059729606Y4    PP1    PPYR1    601790

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

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Text2Knowledge ... Yong Huang 2002