Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Tk-1NM_00938710090D530002A18Rik    Tk1   
tk-1S5724410095tkb+   

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

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Text2Knowledge ... Yong Huang 2002