Perhaps you should try some spelling variations:
decrease response » decreased response (Expand search), increases response (Expand search), increased response (Expand search)
response decrease » response defense (Expand search)
decrease fear » decreased fear (Expand search), decrease fetal (Expand search), decreased heart (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
akt decrease » and decrease (Expand search), not decrease (Expand search), any decrease (Expand search)
fear effects » year effects (Expand search), fear affects (Expand search), pear effects (Expand search)
decrease il » decreased il (Expand search), decrease in (Expand search), decrease hiv (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease il decrease akt decrease ) OR ( decrease response decrease fear effects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease il decrease akt decrease ) OR ( decrease response decrease fear effects ))*.