+--------------SUBJ:V-N-------------+----------COMP:V-N(in)----------+    
      +--------COMP:N-N(of)-------+       |            +----MOD_ATT:N-N----+    
      |           +-MOD_ATT:N-ADJ-+       |            |   +-MOD_ATT:N-ADJ-+    
      |           |       +MOD_ATT+       |            |   |      +MOD_ATT:+    
      |           |       |       |       |            |   |      |        |    
 Expression of __SP__ __NODE__ protein occurs in 80.5 day old embryonic __SP__ .
COMP:N-N(of) (expression,protein)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,__SP__)
MOD_ATT:N-N (__SP__,day)
MOD_ATT:N-ADJ (__SP__,old)
MOD_ATT:N-ADJ (__SP__,embryonic)