+-------COMP:N-N(of)-------+   
     +MOD_ATT+--COMP:V_PASS-N(In)--+            |           +-MOD_ATT:N-ADJ+   
     |   +MOD+         +SUBJ:V_PASS+COMP:V_PASS-+           |       +MOD_AT+   
     |   |   |         |           |            |           |       |      |   
 In 3T3 L1 cells , __NODE__ is involved in expression of __SP__ __NODE__ mRNA .
MOD_ATT:N-ADJ (cell,3T3)
MOD_ATT:N-N (cell,L1)
COMP:V_PASS-N(In) (involve,cell)
SUBJ:V_PASS-N (involve,__NODE__)
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__)