Table 2. Details of the animals studied in in vivo.

Horse	Group	Age [years]	Breed	Disease status	Clinical score	Weight [kg]	Mucus score	Septum thickness	Bronchiectasis	DeltaPL [cmH2O]	RL [cmH2O/L/sec]
1	Control	12	QH	-	2/8	480	0/5	2/4	no
2	Control	25	QH	-	3/8	450	0/5	0/4	regional
3	Control	8	Pony	-	2/8	253	0/5	1/4	no
4	Heaves	27	QH	Remission	4/8	438	1/5	2/4	yes
5	Heaves	14	STB	Symptomatic	6/8	430	1/5	3/4	yes	25	1.8
6	Heaves	15	QH	Symptomatic	5/8	450	2/5	4/4	yes
7	Heaves	27	Polo Pony	Symptomatic	6/8	450	3/5	2/4	regional

QH: Quarter Horse; STB: Standardbred. Clinical scores were assessed as defined by Robinson [15]. Septum thickness was assessed as defined by Koblinger [16]. Ante mortem BAL data were not available. Pulmonary mechanics were available only for one horse, as it belonged to our research herd.