Table 1

Characterisation of the animals, airway function and lung inflammation

Group	Age (years)	Weight (kg)	Sex	Airway resistance after antigen challenge (cm H₂O/L/s)	Neutrophils count in BALF after antigen challenge (%)
Control	15	497	Mare	0.52	18
Control	16	475	Mare	0.81	1
Control	18	394	Gelding	0.87	2
Control	18	425	Mare	0.38	4
Control	19	494	Gelding	0.43	2
Control	22	444	Mare	0.44	1
Control	23	490	Mare	0.47	24
Control	27	508	Mare	1.02	8
Control	16	453	Mare	0.53	18
Control	12	NA	Mare	0.30	2
Heaves	18	443	Mare	2.63	37
Heaves	20	452	Mare	2.87	42
Heaves	20	506	Gelding	2.37	64
Heaves	23	442	Gelding	2.02	37
Heaves	21	477	Gelding	1.83	38
Heaves	26	480	Mare	3.44	32
Heaves	22	440	Mare	2.12	42
Heaves	14	580	Mare	3.83	25
Heaves	17	546	Mare	2.49	36
Heaves	20	570	Gelding	2.10	63
Heaves	17	555	Gelding	3.07	25
Heaves	23	475	Mare	4.37	48
Heaves	19	472	Mare	1.70	35
Heaves	19	491	Mare	2.39	NA
Heaves	16	462	Mare	3.27	20
Heaves	20	444	Gelding	2.15	42