+--------------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:+       
      |           |       |       |       |        |     |            |        |       
 Expression of __SP__ __NODE__ protein occurs in cell surface from __SP__ macrophages .
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,macrophage)
MOD_ATT:N-N (macrophage,cell)
MOD_ATT:N-N (macrophage,surface)
MOD_ATT:N-ADJ (macrophage,__SP__)