Your Query returns 23 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
rtn1AL0355844896SPBC31A8.01c    SPBC651.13c    cwl1   
RTN1AY1647239031
RTN1AY1647249031
Rtn1AY1647984932
Rtn1NM_15345710090Nsp    Rtn1-a    Rtn1-b    Rtn1-c    MGC40985    0710005K15Rik    600865
Rtn1NW_04776010116
RTN1BC0030039606NSP    600865
RTN1AY4051419606600865
RTN1AY4051429598
RTN1AY40514310090600865
Rtn1NT_03955110090600865
Rtn1BC03045510090Nsp    Rtn1-a    Rtn1-c    MGC40985    Rtn1-b    600865
Rtn1BC05857910090Nsp    Rtn1-a    Rtn1-c    MGC40985    Rtn1-b    600865
Rtn1BC05392610090Nsp    Rtn1-a    Rtn1-c    MGC40985    Rtn1-b    600865
rtn1AE017131229193
RTN1NT_0264379606600865
Rtn1NM_05386510116Nsp   
rtn10N/A
RTN1NM_0211369606NSP    600865
RTN1NM_2068529606NSP    600865
RTN1NM_2068579606NSP    600865
RTN1BC0003149606NSP    600865
RTN1NC_0011364932

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

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Text2Knowledge ... Yong Huang 2002