Perhaps you should try some spelling variations:
treg decreased » are decreased (Expand search), the decreased (Expand search), to decreased (Expand search)
decrease cells » decrease cell (Expand search), decreases cell (Expand search), decrease costs (Expand search)
cells decrease » cells decreases (Expand search), cells increase (Expand search), cells increases (Expand search)
decrease treg » decrease the (Expand search), increase treg (Expand search), decrease their (Expand search)
decreased to » decreased the (Expand search), decreased tgf (Expand search), decreased in (Expand search)
in objects » in object (Expand search), on objects (Expand search), and objects (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 treg decreased to decrease ) OR ( decrease cells decrease in objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease treg decreased to decrease ) OR ( decrease cells decrease in objects ))*.