Table 2.

Results of the IFN-γ ELISA generated from two culture confirmed Mycobacterium microti infected cats and 14 healthy cats aged between one and 11 years are shown.

	Mean IFN-γ response [Concentration C.I. (ng/ml)]
	Bovine PPD	Avian PPD	PMA/Ca
M. microti—positive
1	0.50 (0.32–0.69)	<0.246	4.05 (3.73–4.33)
2	7.82 (5.41–10.18)	2.96 (2.29–3.56)	47.70 (15.46–79.79)
Control cats
3	<0.246	<0.246	14.26 (8.30–20.20)
4	<0.246	<0.246	10.25 (6.48–3.39)
5	<0.246	<0.246	16.00 (10.30–22.20)
6	<0.246	<0.246	>60
7	<0.246	<0.246	0.54 (0.24–0.83)
8	<0.246	<0.246	1.98 (1.42–2.53)
9	<0.246	<0.246	0.60 (0.28–0.91)
10	<0.246	<0.246	4.06 (2.98–5.15)
11	<0.246	<0.246	4.78 (3.41–6.14)
12	<0.246	<0.246	4.69(3.36–6.01)
13	<0.246	<0.246	4.36 (3.08–5.37)
14	<0.246	<0.246	1.31 (0.89–1.72)
15	<0.246	<0.246	39.62 (10.46–74.79)
16	<0.246	<0.246	6.12 (2.98–9.36)