+---------COMP:V_PASS-N(In)---------+                               
         |            +MOD_ATT:N+SUBJ:V_PASS-+COMP:V_PASS-+COMP:N-N(of)+     
         |            |         |            |            |            |     
 In macrophages , __NODE__ protein(s) is involved in expression of __NODE__ .
MOD_ATT:N-ADJ (protein(s),__NODE__)
COMP:V_PASS-N(In) (involve,macrophage)
SUBJ:V_PASS-N (involve,protein(s))
COMP:V_PASS-N(in) (involve,expression)
COMP:N-N(of) (expression,__NODE__)