{HEAD ~ The assay} is intended for {TAIL ~ use} in evaluating the excreta of an animal subject 
is intended for
{ HEAD ~ The assay } is intended for { TAIL ~ use } in evaluating the excreta of an animal subject
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH