Figure 1. Analysis of swimming motility capacity of B. multivorans (white bars) and B. cenocepacia (black bars) isolates from cystic fibrosis lung infections in Vancouver between 1981 and 2008.

Motility was assessed by inoculating bacteria into the center of a motility agar plate and incubating for 48 hrs, after which the diameter was measured. Isolates were classified as motile if colonial diameter was >10 mm and nonmotile if the diameter was less than or equal to 10 mm.