+--------------SUBJ:V-N--------------+                                         
      +--------COMP:N-N(of)-------+        |          +-------COMP:N-N(of)-------+   
      |           +-MOD_ATT:N-ADJ-+        |          |           +-MOD_ATT:N-ADJ+   
      |           |       +MOD_ATT+        +--OBJ:V-N-+           |       +MOD_AT+   
      |           |       |       |        |          |           |       |      |   
 Activation of __SP__ __NODE__ mRNA(s) decreases expression of __SP__ __NODE__ mRNA .
COMP:N-N(of) (activation,mRNA(s))
MOD_ATT:N-ADJ (mRNA(s),__SP__)
MOD_ATT:N-ADJ (mRNA(s),__NODE__)
SUBJ:V-N (decrease,activation)
OBJ:V-N (decrease,expression)
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)