Perhaps you should try some spelling variations:
decreases disease » diseases disease (Expand search), decreases adipose (Expand search), decreases breast (Expand search)
disease processes » disease process (Expand search), disease progress (Expand search), these processes (Expand search)
studying cell » studying gene (Expand search), studying pfl (Expand search)
by decreases » by decreased (Expand search), but decreases (Expand search), 1 decreases (Expand search)
decrease by » decreased by (Expand search), decrease in (Expand search), decrease of (Expand search)
cell python » cell pathogen (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease by decreases disease processes ) OR ( python studying cell python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease by decreases disease processes ) OR ( python studying cell python programming ))*.