Perhaps you should try some spelling variations:
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
depressed treg » depressed the (Expand search), depressed area (Expand search), depressed areas (Expand search)
gas processing » images processing (Expand search)
treg decrease » the decrease (Expand search), urea decrease (Expand search), drugs decrease (Expand search)
decrease gas » decrease at (Expand search), decrease its (Expand search), increase gas (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain 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 during depressed treg decrease ) OR ( decrease in decrease gas processing ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during depressed treg decrease ) OR ( decrease in decrease gas processing ))*.