+-------------------COMP:V-N(in)------------------+    
      +--------------SUBJ:V-N-------------+          +-------------MOD_ATT:N-ADJ------------+    
      +--------COMP:N-N(of)-------+       |          |       +---------MOD_ATT:N-ADJ--------+    
      |           +-MOD_ATT:N-ADJ-+       |          |       |         +----MOD_ATT:N-ADJ---+    
      |           |       +MOD_ATT+       |          |       |         |            +MOD_ATT+    
      |           |       |       |       |          |       |         |            |       |    
 Expression of __SP__ __NODE__ protein occurs in cultured __SP__ hematopoietic progenitor cells .
COMP:N-N(of) (expression,protein)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,cell)
MOD_ATT:N-ADJ (cell,cultured)
MOD_ATT:N-ADJ (cell,__SP__)
MOD_ATT:N-ADJ (cell,hematopoietic)
MOD_ATT:N-N (cell,progenitor)