id	keyword
american_scientific_journal-2511	hirudin
american_scientific_journal-2511	gene
american_scientific_journal-2511	protein
american_scientific_journal-2511	pcr
american_scientific_journal-2511	vector
american_scientific_journal-2511	figure
american_scientific_journal-2511	engineering
american_scientific_journal-2511	volume
american_scientific_journal-2511	leeches
american_scientific_journal-2511	dna
american_scientific_journal-2511	technology
american_scientific_journal-2511	research
american_scientific_journal-2511	sciences
american_scientific_journal-2511	journal
american_scientific_journal-2511	scientific
american_scientific_journal-2511	asrjets
american_scientific_journal-2511	gel