Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
PTGHSBC0298409606PGHS-1    PGG/HS    COX1    PGHS1    COX3    PCOX1    PHS1    PTGS1   
PTGHSNM_0009629606COX1    COX3    PHS1    PCOX1    PGHS1    PGG/HS    PGHS-1    PTGS1   
PTGHSNM_0805919606COX1    COX3    PHS1    PCOX1    PGHS1    PGG/HS    PGHS-1    PTGS1   

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

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Text2Knowledge ... Yong Huang 2002