+----------SUBJ:V-N---------+-----COMP:V-N(in)-----+    
      +----COMP:N-N(of)---+       |        +MOD_ATT:N-ADJ+    
      |           +MOD_ATT+       |        |      +MOD_AT+    
      |           |       |       |        |      |      |    
 Expression of __SP__ __NODE__ occurs in 10.17 Schwann cells .
COMP:N-N(of) (expression,__NODE__)
MOD_ATT:N-ADJ (__NODE__,__SP__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,cell)
MOD_ATT:N-ADJ (cell,@card@)
MOD_ATT:N-N (cell,Schwann)