Planktonic Growth of Pseudomonas aeruginosa around a Dual-Species Biofilm Supports the Growth of Fusobacterium nucleatum within That Biofilm

Table 1

Bacteria isolated from cultures of left and right ear fluid samples.

Right ear fluid		Left ear fluid
Organism		Organism
Pseudomonas aeruginosa strain 1	4+	Pseudomonas aeruginosa strain 1	4+
Pseudomonas aeruginosa strain 2	4+	Pseudomonas aeruginosa strain 2	4+
Viridans streptococci	<1+	Viridans streptococci type 1	<1+
Staphylococcus sp. (coagulase-negative)	<1+	Viridans streptococci type 2	<1+
		Enterococcus faecalis	<1+
		Staphylococcus sp. (coagulase-negative)	<1+
		Diphtheroids	<1+

, semiquantitation based on 4-quadrant streaking method: 4+, growth in quadrant 4; 3+, growth in quadrant 3: 2+, growth in quadrant 2; 1+, growth throughout quadrant 1; <1+, scattered colonies within quadrant 1.