FIG. 3.

A. xylosoxidans RAPD profiles grouped by the presence of chronic concomitant bacterial flora. Profiles were colored as follows: ppp = blue, aaa = red, apa = yellow, paa = green, aap = orange, and ppa = light cyan. The Mahalanobis distances (D²) between the six centers of gravity were as follows: for ppp versus ppa, 124.9; for ppp versus paa, 152.5; for ppp versus apa, 130.2; for ppp versus aap, 160.4; for ppp versus aaa, 116.1; for ppa versus paa, 32.2; for ppa versus apa, 19.5; for ppa versus aap, 25.5; for ppa versus aaa, 26.6; for paa versus apa, 34.4; for paa versus aap, 13.7; for paa versus aaa, 24.6; for apa versus aap, 28.5; for apa versus aaa, 30.1; and for aap versus aaa, 25.9. Comparisons of the aforementioned distances were statistically significant (Fisher tests; P < 0.0001) for all the groups, except for profile aap versus ppa, aap versus paa, apa versus ppa, and aaa versus paa (P = 0.78). The predictability of the model is 93.4%, and Wilks's lambda value = 0.003.