Perhaps you should try some spelling variations:
rats decreases » and decreases (Expand search), but decreases (Expand search), stress decreases (Expand search)
decreases treg » decrease treg (Expand search), decreases the (Expand search), decreases stress (Expand search)
decrease rats » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
treg decrease » the decrease (Expand search), urea decrease (Expand search), drugs decrease (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
that decrease » that increase (Expand search), that increases (Expand search), not decrease (Expand search)
decrease with » decreases with (Expand search), increase with (Expand search), decrease in (Expand search)
with paternal » with maternal (Expand search), with external (Expand search), with internal (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 rats decreases treg decrease ) OR ( decrease that decrease with paternal ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rats decreases treg decrease ) OR ( decrease that decrease with paternal ))*.