Your Query returns 37 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Mdr1NM_01107510090mdr    Pgy1    Abcb1    Mdr1b    Pgy-1    Abcb1b    171050
MDR1AY4526739606ABCB1    171050
Mdr1NM_01262310116Abcb1    Abcb1b    Pgy1   
MDR1AF3453379606ABCB1    171050
MDR1AF3456269606ABCB1    171050
MDR1NM_0009279606CLCS    P-gp    PGY1    ABC20    CD243    GP170    ABCB1    171050
mdr1L080915663
mdr1AJ42212029159
MDR1AL92935336329PFE1150w   
mdr1AF3020945861
mdr1AY1236255825
mdr1U629315059
mdr1U629325059
mdr1U629335085
mdr1U629345085
mdr1AY4957015663
mdr1U629295207
mdr1U629305207
mdr1U629285580
MDR1AB0662999615
MDR1AF0162579615
MDR1AF0450169615
mdr1U786099940
MDR1AF4032409615
MDR1AF4032459823
MDR1AJ22775242374
MDR1AF1944195482
mdr1AJ53507039947
MDR1NC_00432636329PFE1150w   
MDR1AY4902549606171050
mdr1AF0165359606171050
MDR1AF0165349606171050
mdr1X780819606171050
MDR1X832899606171050
MDR1X587239606171050
mdr1M6034810090171050
MDR10N/AMIC1    GYP2   

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

Google

Text2Knowledge ... Yong Huang 2002