+---------COMP:V-N(in)---------+    
      +----------SUBJ:V-N----------+        +-----MOD_ATT:N-N-----+    
      +----COMP:N-N(of)----+       |        |     +--MOD_ATT:N-N--+    
      |            +MOD_ATT+       |        |     |          +MOD_+    
      |            |       |       |        |     |          |    |    
 Expression of __NODE__ protein occurs in cell surface from BWZ 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,cell)
MOD_ATT:N-N (cell,surface)
MOD_ATT:N-N (cell,BWZ)