It is {HEAD ~ a further object} of {TAIL ~ the invention} to provide an assay vehicle suitable for use in an animal litter or bedding 
of
It is { HEAD ~ a further object } of { TAIL ~ the invention } to provide an assay vehicle suitable for use in an animal litter or bedding
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH