id	keyword
american_scientific_journal-1855	brucellosis
american_scientific_journal-1855	level
american_scientific_journal-1855	herd
american_scientific_journal-1855	cattle
american_scientific_journal-1855	production
american_scientific_journal-1855	system
american_scientific_journal-1855	seroprevalence
american_scientific_journal-1855	study
american_scientific_journal-1855	animal
american_scientific_journal-1855	risk