Perhaps you should try some spelling variations:
their affected » their unaffected (Expand search), the affected (Expand search), her affected (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
decrease will » decrease with (Expand search), decrease cell (Expand search), decrease il (Expand search)
decrease treg » decrease the (Expand search)
treg decrease » the decrease (Expand search), urea decrease (Expand search), drugs decrease (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 NOT decrease will decrease ) OR ( decrease treg decrease their affected ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease NOT decrease will decrease ) OR ( decrease treg decrease their affected ))*.