Table 4. OTUs existing in 90% of the induced sputum microbiota in healthy controls, but not found in asthma patients.

OTU	Contribution (%)	Predicted bacterial group
		Family	Phylum
598	0.46	Lactobacillaceae	Firmicutes
		Bacteroidales	Bacteroidetes
144	0.35	Lachnospiraceae	Firmicutes
		Flavobacteriaceae	Bacteroidetes

OTU: operational taxonomic unit.