+------------SUBJ:V-N------------+---------COMP:V-N(in)---------+    
      +-------COMP:N-N(of)-------+     |        +-----MOD_ATT:N-N-----+    
      |           +-MOD_ATT:N-ADJ+     |        |     +-MOD_ATT:N-ADJ-+    
      |           |       +MOD_AT+     |        |     |       +MOD_ATT+    
      |           |       |      |     |        |     |       |       |    
 Expression of __SP__ __NODE__ mRNA occurs in KKAy __SP__ skeletal muscle .
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,muscle)
MOD_ATT:N-N (muscle,KKAy)
MOD_ATT:N-ADJ (muscle,__SP__)
MOD_ATT:N-ADJ (muscle,skeletal)