Perhaps you should try some spelling variations:
nitrogen processes » neurogenic processes (Expand search), nitrogen losses (Expand search), nitrogen produsts (Expand search)
decrease nitrogen » decreases nitrogen (Expand search), increase nitrogen (Expand search), increased nitrogen (Expand search)
decrease lesions » disease lesions (Expand search), decreased response (Expand search), decrease adhesion (Expand search)
lesions decrease » response decrease (Expand search), lesions case (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (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 lesions decrease nitrogen processes ) OR ( decrease _ decrease to decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease lesions decrease nitrogen processes ) OR ( decrease _ decrease to decrease ))*.