+-----------------------SUBJ:V-N-----------------------+     
 +------------OBJ:V-N-----------+                       |     
 |  +MOD_ATT:N-N+----SUBJ:V-N---+--OBJ:V-N-+MOD_PO+     |     
 |  |           |               |          |      |     |     
 5 HT [5_hydroxytryptamine] increases expression of __NODE__ .
MOD_ATT:N-N ([5_hydroxytryptamine],HT)
OBJ:V-N (increase,5)
SUBJ:V-N (increase,[5_hydroxytryptamine])
OBJ:V-N (increase,expression)
MOD_POST:N-ADJ (expression,of)
SUBJ:V-N (__NODE__,5)