+------------------SUBJ:V-N-----------------+----------COMP:V-N(in)---------+    
      +--------COMP:N-N(of)-------+               |        +------MOD_ATT:N-N-----+    
      |           +-MOD_ATT:N-ADJ-+               |        |            +MOD_ATT:N+    
      |           |       +MOD_ATT+          +-NEG+        |            |   +MOD_A+    
      |           |       |       |          |    |        |            |   |     |    
 Expression of __SP__ __NODE__ protein does not occur in aorta from 8 week old __SP__ .
COMP:N-N(of) (expression,protein)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
SUBJ:V-N (occur,expression)
NEG (occur,not)
COMP:V-N(in) (occur,__SP__)
MOD_ATT:N-N (__SP__,aorta)
MOD_ATT:N-N (__SP__,week)
MOD_ATT:N-ADJ (__SP__,old)