+-------COMP:N-N(of)-------+   
            +------COMP:V_PASS-N(In)-----+            |           +-MOD_ATT:N-ADJ+   
      +MOD_A+          +MOD_ATT+SUBJ:V_PA+COMP:V_PASS-+           |       +MOD_AT+   
      |     |          |       |         |            |           |       |      |   
 In HepG2 cells , fenofibric acid is involved in expression of __SP__ __NODE__ mRNA .
MOD_ATT:N-N (cell,HepG2)
MOD_ATT:N-ADJ (acid,fenofibric)
COMP:V_PASS-N(In) (involve,cell)
SUBJ:V_PASS-N (involve,acid)
COMP:V_PASS-N(in) (involve,expression)
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)