+--------------------SUBJ:V-N--------------------+                    
      +--------------COMP:N-N(of)--------------+       |                    
      |           +--------MOD_ATT:N-ADJ-------+       +--COMP:V-N(in)-+    
      |           |       +----MOD_ATT:N-ADJ---+       |       +MOD_ATT+    
      |           |       |           +MOD_ATT:+       |       |   +MOD+    
      |           |       |           |        |       |       |   |   |    
 Expression of __SP__ __NODE__ 2 [__NODE__] protein occurs in 3T3 L1 cells .
COMP:N-N(of) (expression,protein)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
MOD_ATT:N-N (protein,[__NODE__])
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,cell)
MOD_ATT:N-ADJ (cell,3T3)
MOD_ATT:N-N (cell,L1)