Ethidium bromide gel showing relative expression of sITLN 1, 2 and 3 transcripts in lung from normal and Dictyocaulus filaria infected sheep (A) and corresponding graphs showing relative transcript expression in control (C) and infected (I) lungs (B). Transcript expression is relative to the house keeping gene sheep ATPase. Boxes represent 25th and 75th quartile range, lines represents median and whiskers range of data. * Represents significant difference compared to controls. Groups were compared using a Mann–Whitney U test. p < 0.05 was considered significant.