+------------COMP:N-N(of)-----------+      
               +------OBJ:V-N-----+                |      
     +-OBJ:V-N-+         +SUBJ:V-N+        +MOD_ATT+      
     |         |         |        |        |       |      
 __NODE__ protein(s) increases release of Igf protein(s) .
OBJ:V-N (__NODE__,protein(s))
COMP:N-N(of) (protein(s),protein(s))
OBJ:V-N (release,protein(s))
SUBJ:V-N (release,increase)
MOD_ATT:N-N (protein(s),Igf)