+---------COMP:V-N(in)---------+    
      +------SUBJ:V-N------+          +---MOD_ATT:N-ADJ---+    
      +COMP:N-N(of)+       |          |         +MOD_ATT:N+    
      |            |       |          |         |         |    
 Expression of __NODE__ occurs in vascular endothelial tissue .
COMP:N-N(of) (expression,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,toilet)
MOD_ATT:N-ADJ (toilet,vascular)
MOD_ATT:N-ADJ (toilet,endothelial)