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)
decrease treg » decrease the (Expand search), increase treg (Expand search), decrease their (Expand search)
treg decrease » the decrease (Expand search), urea decrease (Expand search), drugs decrease (Expand search)
depressed to » depressed the (Expand search), dressed to (Expand search), depressed nk (Expand search)
decrease how » decrease low (Expand search), decrease of (Expand search), decrease hiv (Expand search)
how objects » iot objects (Expand search), new objects (Expand search), from objects (Expand search)

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

• Removing quotes may allow a broader search: (( decrease during depressed to decrease ) OR ( decrease treg decrease how objects ))~.