Perhaps you should try some spelling variations:
significantly altered » significantly affected (Expand Search), significantly elevated (Expand Search), significantly lower (Expand Search)
significantly weaker » significantly greater (Expand Search), significantly better (Expand Search), significantly related (Expand Search)
altered decrease » altered release (Expand Search), observed decrease (Expand Search), teer decrease (Expand Search)
weaker decrease » greater decrease (Expand Search), teer decrease (Expand Search), water decreases (Expand Search)

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

• Removing quotes may allow a broader search: (( significantly altered decrease ) OR ( significantly weaker decrease )).