+--------------SUBJ:V-N-------------+---------------COMP:V-N(in)--------------+    
      +--------COMP:N-N(of)-------+       |        +-----------MOD_ATT:N-N----------+    
      |           +-MOD_ATT:N-ADJ-+       |        |     +--------MOD_ATT:N-N-------+    
      |           |       +MOD_ATT+       |        |     |                +MOD_ATT:N+    
      |           |       |       |       |        |     |                |         |    
 Expression of __SP__ __NODE__ protein occurs in cell surface from __NODE__/PRF/5 cells .
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,cell)
MOD_ATT:N-N (cell,cell)
MOD_ATT:N-N (cell,surface)
MOD_ATT:N-ADJ (cell,__NODE__/PRF/5)