Your Query returns 20 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CAT3NM_00751510090Atrc3    SLC7A1    SLC7A2    Slc7a3   
CAT3BC05019510090SLC7A1    SLC7A2    Slc7a3   
Cat3NM_01721710116Atrc3    cat-3    Slc7a2    Slc7a3   
CAT30N/ASCI1    SNF4   
cat3AE00515364091VNG6179G   
cat3D556473663
cat3AF0352543847
CAT3AF0219373702Col   
Cat3L059344577
CAT3U431473702
CAT3AF1044533707
Cat3AF1395393726
cat3BX571867243265
cat3Z369774092
cat3AE00443864091VNG6179G   
CAT3AY1286954072
CAT3AY3692645016
CAT3U7085910090
cat3NC_00260864091
cat3NC_005126243265

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

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Text2Knowledge ... Yong Huang 2002