+------------SUBJ:V-N------------+-----------COMP:V-N(in)----------+    
      +-------COMP:N-N(of)-------+     |         +-----MOD_ATT:N-ADJ-----+    
      |           +-MOD_ATT:N-ADJ+     |         |      +---MOD_ATT:N-N--+    
      |           |       +MOD_AT+     |         |      |          +MOD_A+    
      |           |       |      |     |         |      |          |     |    
 Expression of __SP__ __NODE__ mRNA occurs in adrenal gland from male __SP__ .
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,__SP__)
MOD_ATT:N-ADJ (__SP__,adrenal)
MOD_ATT:N-N (__SP__,gland)
MOD_ATT:N-N (__SP__,male)