Perhaps you should try some spelling variations:
methods affected » methods affect (Expand search), methods effect (Expand search), method affects (Expand search)
decrease methods » defense methods (Expand search), disease methods (Expand search), dense methods (Expand search)
decrease treg » decrease the (Expand search), decrease their (Expand search), decrease toc (Expand search)
treg decrease » the decrease (Expand search), urea decrease (Expand search), drugs decrease (Expand search)
decrease not » decrease of (Expand search), decrease at (Expand search), decrease akt (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (Expand search)
in decrease » in decreased (Expand search), and decrease (Expand search), can decrease (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease in decrease treg decrease ) OR ( decrease NOT decrease methods affected ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease in decrease treg decrease ) OR ( decrease not decrease methods affected ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease in decrease treg decrease ) OR ( decrease not decrease methods affected ))*.