Figure 4From: Maternal immunization with vaccines containing recombinant NetB toxin partially protects progeny chickens from necrotic enteritisLesion scores in C. perfringens challenged progeny chickens. The horizontal bars represent the average lesion score in each group. Each symbol represents an individual bird. (a) Trial 1: chickens challenged at day 21. (b) Trial 2 - chickens challenged at day 14. Error bars represent SEM. n = 25 per group. *p < 0.05, **p < 0.01, ***p < 0.001.Back to article page