id	keyword
mkg-820	gel
mkg-820	pge2
mkg-820	hour
mkg-820	rats
mkg-820	cells
mkg-820	pmn
mkg-820	application
mkg-820	mucosa
mkg-820	oral
mkg-820	group
mkg-820	inflammation
mkg-820	cmc
mkg-820	pge2 gel