+----------------SUBJ:V-N----------------+---------------COMP:V-N(in)--------------+    
      +-----------COMP:N-N(of)-----------+     |          +----------MOD_ATT:N-N---------+    
      |           +-----MOD_ATT:N-ADJ----+     |          |      +------MOD_ATT:N-N------+    
      |           |       +--MOD_ATT:N-N-+     |          |      |             +MOD_ATT:N+    
      |           |       |      +MOD_ATT+     |          |      |             |   +MOD_A+    
      |           |       |      |       |     |          |      |             |   |     |    
 Expression of __SP__ Igf 2 [__NODE__] mRNA occurs in prostate gland from 12 week old __SP__ .
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-N (mRNA,2)
MOD_ATT:N-N (mRNA,[__NODE__])
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,__SP__)
MOD_ATT:N-N (__SP__,prostate)
MOD_ATT:N-N (__SP__,gland)
MOD_ATT:N-N (__SP__,week)
MOD_ATT:N-ADJ (__SP__,old)