+MOD_ATT:N-A+----------COMP:V-N(of)----------+                  
                |  +MOD_ATT:+     +---MOD_ATT:N-ADJ--+       +-COMP:V-N(in)+    
                |  |    +MOD+     |         +MOD_ATT:+SUBJ:V-+        +MOD_+    
                |  |    |   |     |         |        |       |        |    |    
 Expression of 15 kd __SP__ B __NODE__ [__NODE__] protein occurs in M049 cells .
MOD_ATT:N-ADJ (B,@card@)
MOD_ATT:N-ADJ (B,kd)
MOD_ATT:N-ADJ (B,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
MOD_ATT:N-N (protein,[__NODE__])
COMP:V-N(of) (occur,B)
SUBJ:V-N (occur,protein)
COMP:V-N(in) (occur,cell)
MOD_ATT:N-N (cell,M049)