Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
PP4 19CNM_1677037227CG18339    CG1596    CG1459    PP4    PPX    CG32505    Protein phosphatase X    Pp4-19C   
PP4 19CNM_1767687227CG18339    CG1596    CG1459    PP4    PPX    CG32505    Protein phosphatase X    Pp4-19C   

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

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Text2Knowledge ... Yong Huang 2002