The experimental model of infection used in this study is summarised. Details are given in the footnotes. Two experimental trials were carried out; Expt.1; addressing differences between immune ("previously infected") and naïve sheep at days 5 and 10 post challenge, and Expt.2, addressing differences between immune and naïve and sheep without challenge (day 0) and early post-challenge (day 2).
a1 × 50 000 T. circumcincta L3 on Day 0
b2000 T. circumcincta L3 3 × per wk for eight weeks