+----------SUBJ:V-N----------+------COMP:V-N(in)-----+    
      +----COMP:N-N(of)----+       |          +-MOD_ATT:N-N+    
      |            +MOD_ATT+       |          |      +MOD_A+    
      |            |       |       |          |      |     |    
 Expression of __NODE__ protein occurs in pancreas islet cells .
COMP:N-N(of) (expression,protein)
MOD_ATT:N-ADJ (protein,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,cell)
MOD_ATT:N-N (cell,pancreas)
MOD_ATT:N-N (cell,islet)