Table 1. Biochemical characterization of some of the Helicobacter species isolated in this study.

+, Positive reaction; −, negative reaction; S, sensitive; I, intermediate; R, resistant; NA, nalidixic acid (30 mg); CE, cephalothin (30 mg).

MIT strain (sample)	16S rRNA cluster	Urease activity	Oxidase activity	Catalase production	Nitrate reduction	Alkaline phosphatase hydrolysis	Indoxyl acetate hydrolysis	γ-Glutamyl transpeptidase activity	Growth at 42 °C	Growth with 1 % glycine	Susceptibility to
											NA	CE
04-8584 (faeces)*	1	−	+	+	−	−	−	−	+	−	S/I	S
04-8589 (faeces)*	1	−	+	+	−	−	−	−	+	−	S/I	R
07-5165 (caecum)*	2	−	+	+	−	−	−	−	+	−	S/I	R
04-8588 (faeces)†	3	−	+	−	−	−	−	−	+	−	S	R
07-5167 (liver)†	3	−	+	−	−	−	−	−	+	−	S/I	R
07-5168 (caecum)†	3	−	+	−	−	−	−	−	+	−	S/I	R/I

^*Included within the species H. marmotae.

^†Novel taxa Helicobacter sp. Prairie Dog 3.