Table 2.

The top 25 most abundant taxa present in the lung microbiota at the level of phyla, families, genera and species in healthy dogs before administration of the antimicrobial drug.

Phylum	Family	Genus	Species	Median relative abundance, %
Firmicutes	Streptococcaceae	Streptococcus	Streptococcus mitis	3.5 (2.1–4.1)
			Streptococcus cristatus	0.5 (0.2–0.8)
			Streptococcus salivarius	0.4 (0–1.0)
	Staphylococcaceae	Staphylococcus	Staphylococcus epidermidis	1.8 (1.7–2.7)
			Staphylococcus warneri	0.8 (0.4–2.2)
			Staphylococcus xylosus	0.5 (0.1–0.7)
	Erysipelotrichaceae	Allobaculum	Allobaculum HM124340	1.3 (0.1–3.5)
			Allobaculum DQ113686	0.5 (0.2–1.3)
			Allobaculum 16S_OTU48	0.3 (0–1.3)
		Turicibacter	Turicibacter FJ880353	0.3 (0.1–0.6)
	Veillonellaceae	Veillonella	Veillonella JQ449520	1.1 (0.8–1.4)
	Bacillales Family XI	Gemella	Gemella haemolysans	0.9 (0.4–1.0)
Actinobacteria	Propionibacteriaceae	Propionibacterium	Propionibacterium acnes	7.0 (5.2–17.0)
	Corynebacteriaceae	Corynebacterium_1	Corynebacterium_1 tuberculostearicum	1.1 (0.4–1.5)
	Micrococcaceae	Micrococcus	Micrococcus luteus	0.6 (0.4–0.8)
		Rothia	Rothia mucilaginosa	0.6 (0.1–1.0)
			Rothia dentocariosa	0.4 (0–0.9)
Proteobacteria	Moraxellaceae	Acinetobacter	Acinetobacter_johnsonii	0.4 (0.1–2.5)
		Enhydrabacter	Enhydrobacter_osloensis	0.4 (0.1–1.0)
Bacteroidetes	Flavobacteriaceae	Flavobacterium	Flavobacterium EU802240	0.7 (0.1–1.1)
		Elizabethkingia	Elizabethkingia miricola	0.6 (0.1–1.0)
		Chryseobacterium	Chryseobacterium haifense	0.4 (0–1.0)
Fusobacteria	Fusobacteriaceae	Fusobacterium	Fusobacterium AJ867041	0.6 (0–1.6)
			Fusobacterium nucleatum	0.4 (0.1–0.9)
Verrucomicrobia	Verrucomicrobiaceae	Verrucomicrobiaceae_ge	Verrucomicrobiaceae_ge 16S_OTU17	0.8 (0.4–2.2)

The relative abundances are presented in median and interquartile range.