Your Query returns 21 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
cdk9AL5909714896pi014    SPACTOKYO_453.22    SPBC32H8.10   
CDK9NG_0005817227P-TEF    PTefb    CG5179    P-TEFb    CT16479    p43 PITALRE   
CDK9NM_0578787227P-TEF    PTefb    CG5179    P-TEFb   
CDK9NT_0337787227P-TEF    PTefb    CG5179    P-TEFb   
Cdk9AY1188097227
Cdk9NM_13086010090PITALRE    603251
CDK9BC0019689606PITALRE    CDC2L4    C-2k    TAK    603251
CDK9AF2553069606603251
CDK9AY4073229606603251
CDK9AY4073239598
CDK9AY40732410090603251
CDK9NM_0012619606TAK    C-2k    CDC2L4    PITALRE    603251
CDK9AF5178409606603251
Cdk9NT_03920610090603251
Cdk9AF32743110090603251
Cdk9AF32756910090603251
Cdk9BC00390110090PITALRE    603251
CDK9AY33562832630
Cdk9AE0034587227
CDK9NT_0084709606603251
cdk9BC0556347955wu:fb22e09    fb22e09    wu:fc06c02    fc06c02   

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

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Text2Knowledge ... Yong Huang 2002