+----COMP:N-N(of)---+     
     +SUBJ:+--OBJ:V-N-+           +MOD_ATT+     
     |     |          |           |       |     
 IGF 1 increases activation of unique cascades .
SUBJ:V-N (increase,1)
OBJ:V-N (increase,activation)
COMP:N-N(of) (activation,cascade)
MOD_ATT:N-ADJ (cascade,unique)