Your Query returns 24 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
PPOXNM_01041010090Hcrt    600923
PPOXNM_0015249606OX    HCRT    600923
PpoxNM_00891110090Ppo    600923
ppoxX994509606600923
ppoxX994509606600923
PPOXAY4037979606600923
PPOXAY4037989598
PPOXAY40379910090600923
PPOXAH0107269606600923
PPOXAY0326869606600923
PPOXAY0326879606600923
PPOXAY0326889606600923
PPOXAF3218219606600923
PPOXAF3218229606600923
PPOXAF3218239606600923
PPOXAF3958689606600923
PpoxNT_07830610090600923
PpoxBC00204710090Ppo    600923
PPOXNT_0794849606600923
PpoxAE0037487227
PPOXNM_0003099606VP    PPO    MGC8485    600923
PPOXBC0023579606PPO    VP    MGC8485    600923
PpoxNM_1430217227CG5796    ESTS:9F2T   
PpoxNT_0337777227CG5796    ESTS:9F2T   

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

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Text2Knowledge ... Yong Huang 2002