+-------COMP:N-N(of)-------+   
             +---COMP:V-N(In)---+          |           +-MOD_ATT:N-ADJ+   
       +MOD_A+         +SUBJ:V-N+--OBJ:V-N-+           |       +MOD_AT+   
       |     |         |        |          |           |       |      |   
 In __SP__ heart , __NODE__ decreases expression of __SP__ __NODE__ mRNA .
MOD_ATT:N-ADJ (heart,__SP__)
COMP:V-N(In) (decrease,heart)
SUBJ:V-N (decrease,__NODE__)
OBJ:V-N (decrease,expression)
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)