+----------------------SUBJ:V-N---------------------+                      
      +-------------COMP:N-N(of)------------+             |                      
      |           +------MOD_ATT:N-ADJ------+             +---COMP:V-N(in)--+    
      |           |       +--MOD_ATT:N-ADJ--+             |        +MOD_ATT:+    
      |           |       |         +MOD_ATT+        +-NEG+        |   +MOD_+    
      |           |       |         |       |        |    |        |   |    |    
 Expression of __SP__ __NODE__ [__NODE__] mRNA does not occur in beta TC3 cells .
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)
MOD_ATT:N-N (mRNA,[__NODE__])
SUBJ:V-N (occur,expression)
NEG (occur,not)
COMP:V-N(in) (occur,cell)
MOD_ATT:N-N (cell,beta)
MOD_ATT:N-N (cell,TC3)