+----------COMP:V_PASS-N(In)---------+                              
                |        +-MOD_ATT:N-ADJ-+           |                              
        +MOD_ATT+        |       +MOD_ATT+SUBJ:V_PASS+COMP:V_PASS-+COMP:N-N(of+     
        |       |        |       |       |           |            |           |     
 In mesangial cells , __SP__ __NODE__ protein is involved in expression of protein .
MOD_ATT:N-ADJ (cell,mesangial)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
COMP:V_PASS-N(In) (involve,cell)
SUBJ:V_PASS-N (involve,protein)
COMP:V_PASS-N(in) (involve,expression)
COMP:N-N(of) (expression,protein)