TABLE 1.

Frequency of lesions at 6 and 15 wpi^a

Replicate	Inoculum	Chickens (%) with indicated type of lesions at:
		6 wpi				15 wpi
		Visceral		Nerve		Visceral		Nerve
		Gross	Histological	Gross	Histological	Gross	Histological	Gross	Histological
1	rMd5Δpp38	0a	25ab	0a	0a	6a	44b	25ab	37a
	rMd5	60b	60b	73b	80b	79b	100a	100b	100b
	Control	0a	0a	0a	0a	0a	0c	0a	0c
2	rMd5Δpp38	0a	20ab	0a	0a	0a	60ab	8a	40ab
	rMd5	43b	80b	86b	100b	60b	100b	100b	100b
	rMd5/pp38CVI	35b	80b	76b	80b	41b	100b	100b	100b
	Control	0a	0a	0a	0a	0a	0a	0a	0a

^aData indicate the percentage of chickens that developed lesions in each group at 6 and 15 wpi. In replicate 1, there were 34 chickens per treatment and for each time point (6 and 15 wpi). In replicate 2, there were 17 chickens per treatment and for each time point (6 and 15 wpi). Differences between treatment results were statistically studied (analysis of variance test, P < 0.05). The same letter placed next to numbers within a replicate means that the differences were not significant.