TABLE 1.

P. aeruginosa isolates used in this study

Isolate(s)	Source	Size of flagellin gene PCR product (kb)	RFLP group
1, 2	Soil	1.25	I
3, 4, 5, 6, 7, 8	Mushroom surfaces	1.02	V
9, 10	Casing	1.02	V
11	Casing	1.25	I
12, 13, 14, 15, 16, 17, 18, 19, 20	Casing	1.02	V
21	Casing	1.02	XVIII
22, 23, 24, 25, 26	Casing	1.02	V
27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38	Straw	1.02	V
39	Yard straw	1.02	V
40	Yard straw	1.02	VII
41	Yard straw	1.02	V
42	Floor water	1.02	V
43	Floor water	1.25	I
44, 45, 46, 47	Floor water	1.02	V
AQ28, AQ29, AQ30, AQ31, AQ32, AQ33	Canadian aquifer (3)a	1.02	XV
AQ35, AQ36, AQ37, AQ38, AQ39, AQ40, AQ41	Canadian aquifer (3)	1.02	XV
H150	CF patientb	1.02	XIV
H191	CF patient	1.02	XV
D278	CF patient	1.02	XVI
H20, H115	CF patients	1.25	XVII
590, K701	Clinical samples (29)	1.02	Various
409, 593, C201, E4193	Clinical samples (29)	1.25	Various
K979	Clinical sample (29)	2.0	XIII

^aThe numbers in parentheses are reference numbers. 

^bCF, cystic fibrosis.