Your Query CG18455 returns 4 Accession Numbers:

Query Term Accession NCBI Taxonid Synonyms Phenotype (OMIM) *
CG18455 AE003839 7227 Optix   
CG18455 NM_079956 7227 opt    Six3    Dsix3    optix    D-Six3   
CG18455 NM_165584 7227 opt    Six3    Dsix3    optix    D-Six3   
CG18455 NT_033778 7227 opt    Six3    Dsix3    optix    D-Six3   

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

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Text2Knowledge ... Yong Huang 2002