tokens: In Ka13 cells , CoCl ( 2 ) stimulated expression of a luciferase reporter gene under the control of a 15-kilobase pair mouse ho-1 promoter ( pHO15luc ) .
folded_tokens: in ka13 cell , cocl ( 2 ) stimulate expression of a luciferase reporter gene under the control of a 15-kilobase pair mouse ho-1 promoter ( pho15luc ) .