Your Query returns 30 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
myb1NC_0034244896SPAC16A10.07c    taz1    myb   
myb1NC_00433136329PF13_0088   
myb1AJ29174736329
Myb1AF2574835741
myb1U727624097
myb1AL84450936329PF13_0088   
myb1X70877112509
myb1X70879112509
myb1AJ6013764521
myb1AJ6013824606
myb1AJ5760243933
myb1Z971854896myb    SPAC16A10.07c    taz1   
myb1AJ554697226891
MYB1AF4012203747
myb1AF2489624097
Myb1AY1785784522
MYB1AY1155013635
MYB1AY1155023635
MYB1AY11550329730
MYB1AY11550434274
MYB1AY11550547615
Myb1AY236865226677
myb1AY278440104990
MYB1AF485892217447
MYB1AY3563723352
Myb1AY3631184558
Myb1AF4741154577
MYB1AY520822104990
myb1AY456179255331
myb1M758708355

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

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Text2Knowledge ... Yong Huang 2002