+------------SUBJ:V-N------------+           +-----------------OBJ:V-N----------------+        
      +-------COMP:N-N(of)-------+     |           |                        +--MOD_ATT:N-N--+        
      |           +-MOD_ATT:N-ADJ+     |           |                        |   +MOD_ATT:N-A+        
      |           |       +MOD_AT+     +COMP:V-V(in+                        |   |    +MOD_AT+        
      |           |       |      |     |           |                        |   |    |      |        
 Expression of __SP__ __NODE__ mRNA occurs in developing cornea from 180.0 day old fetal __SP__ eye .
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-V(in) (occur,develop)
OBJ:V-N (develop,__SP__)
MOD_ATT:N-N (__SP__,day)
MOD_ATT:N-ADJ (__SP__,old)
MOD_ATT:N-ADJ (__SP__,fetal)