{HEAD ~ Such compositions} can be used in {TAIL ~ a manner} similar to dust mite extracts to treat or prevent allergic reactions to a dust mite allergen in a subject 
used in
{ HEAD ~ Such compositions } can be used in { TAIL ~ a manner } similar to dust mite extracts to treat or prevent allergic reactions to a dust mite allergen in a subject
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH