Fig 1: Tumour necrosis factor-alpha (TNF-α) (A), interleukin- 1 ß (IL- 1ß) (B) and interleukin- 6 (IL- 6) (C) concentrations before and after FIP treatment and in the control group of healthy cats. The Mann–Whitney U-test was used to test for statistically significant differences in TNF-α (n = 7), IL- 1β (n = 5) and IL- 6 (n = 7) concentrations between FIP cats and the control group (n = 5) before and after therapy. A Wilcoxon signed-rank test was used to compare TNF-α (n = 7), IL- 1β (n = 5) and IL- 6 (n = 7) concentrations before and after therapy. A value of p ≤ 0.05 was considered significant