+----------------------COMP:V-N(in)---------------------+    
                                   |         +-----------------MOD_ATT:N-N-----------------+    
                                   |         |       +-------------MOD_ATT:N-N-------------+    
                                   |         |       |        +---------MOD_ATT:N-N--------+    
      +----------SUBJ:V-N----------+         |       |        |      +-----MOD_ATT:N-N-----+    
      +----COMP:N-N(of)----+       |         |       |        |      |        +MOD_ATT:N-AD+    
      |            +MOD_ATT+       |         |       |        |      |        |       +MOD_+    
      |            |       |       |         |       |        |      |        |       |    |    
 Expression of __NODE__ protein occurs in primary culture prostate gland epithelial cell lines .
COMP:N-N(of) (expression,protein)
MOD_ATT:N-ADJ (protein,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,line)
MOD_ATT:N-N (line,primary)
MOD_ATT:N-N (line,culture)
MOD_ATT:N-N (line,prostate)
MOD_ATT:N-N (line,gland)
MOD_ATT:N-ADJ (line,epithelial)
MOD_ATT:N-N (line,cell)