+----------------SUBJ:V-N----------------+                                           
      +-----------COMP:N-N(of)-----------+     +-------------COMP:V-N(in)-------------+    
      |           +-----MOD_ATT:N-ADJ----+     |            +------MOD_ATT:N-ADJ------+    
      |           |       +--MOD_ATT:N-N-+     |            |        +---MOD_ATT:N-N--+    
      |           |       |      +MOD_ATT+     |            |        |          +MOD_A+    
      |           |       |      |       |     |            |        |          |     |    
 Expression of __SP__ Mgk 1 [__NODE__] mRNA occurs in submaxillary gland from male __SP__ .
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-N (mRNA,1)
MOD_ATT:N-N (mRNA,[__NODE__])
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,__SP__)
MOD_ATT:N-ADJ (__SP__,submaxillary)
MOD_ATT:N-N (__SP__,gland)
MOD_ATT:N-N (__SP__,male)