id	keyword
mkg-776	chitosan
mkg-776	gel
mkg-776	macrophage
mkg-776	neutrophyl
mkg-776	concentration
mkg-776	healing
mkg-776	group
mkg-776	wound
mkg-776	ulcer
mkg-776	oral
mkg-776	cells
mkg-776	chitin
mkg-776	days
mkg-776	gingival