id	keyword
bjos-8642734	mucosa
bjos-8642734	pan
bjos-8642734	emission
bjos-8642734	tissue
bjos-8642734	intensity
bjos-8642734	chewers
bjos-8642734	smokers
bjos-8642734	oral
bjos-8642734	collagen
bjos-8642734	excitation
bjos-8642734	fluorescence