TABLE 2.

Helicobacter species isolated from commercial and research mouse colonies in Europe, Asia, Australia, and Canada^a

Source	No. of mice tested/no. of Helicobacter spp. culture positive	WT/GEM: genotype (background)	Age (mo)	Helicobacter species identified	No. of isolates identified by:
					PCR	Sequencing
Commercial company 1 (Switzerland)	2/2	GEM (B6/G9)	12+	Helicobacter sp. strain MIT 96-1001		2
Research institutions
Institution 1 (Australia)	2/0	WT (C57BL/6)	13+	Negative	NA	NA
Institution 2 (Canada)	2/2	GEM: Myr AKT	9	H. hepaticus	2	NA
Institution 3 (Canada)	2/2	GEM: Lnk−/− (C57BL/6)	17	Mixed culture	NA	1
Institution 4 (Canada)	1/1	WT (C57BL/6)	8+	H. hepaticus mixed culture	1
Institution 5 (England)	2/2	GEM: R6/1 (CBA/C57BL/6 F1)	6+	H. hepaticus	2
Institution 6 (France)	1/0	GEM: Apc Flox (C57BL/6)	7+	Negative	NA	NA
Institution 7 (France)	2/1	GEM: PO cre (C57BL/6)	10+	Helicobacter sp. strain Hamster B (NCBI accession no. AF072333)		1
Institution 7 (France)	2/0	GEM: IGF-IR−/+	9+	Negative	NA	NA
Institution 8 (Germany)	2/2	GEM: D1 cre	9+	H. rodentium	2
Institution 9 (Japan)	2/2	GEM: Lefty1+/− (C57BL/6)	5+	Helicobacter sp. strain MIT 01-6451		1
Institution 10 (Japan)	2/2	GEM: WGA	7+	Helicobacter sp. strain MIT 01-6451		2
Institution 11 (The Netherlands)	2/2	GEM: GFAP-cre (FVB)	8	H. hepaticus	2
Institution 11 (The Netherlands)	1/0	GEM: p53-flox/Rb flox	7+	Negative	NA	NA
Institution 12 (Netherlands)	1/1	GEM: rad23B+/− (C57BL/6)	12+	H. hepaticus and H. typhlonius	2
Institution 13 (The Netherlands)	2/2	GEM: cdx1−/− (C57BL/6)	8+	H. typhlonius	2
Institution 14 (Scotland)	3/3	GEM: Alpha V Flox	9	H. hepaticus	3
Institution 14 (Scotland)	2/2	GEM: Intavflox-cre	20+	H. mastomyrinus		2
Institution 15 (Sweden)	2/2	GEM: Cre 151	6	H. typhlonius		1
Total	35/28				16	9

^aWT, wild type; GEM, genetically engineered mice; NA, not applicable.