Fig. 1
From: Procalcitonin as a biomarker in equine chronic pneumopathies
PCT concentrations (0–250 ng/ml) in BALF over different disease groups (n = 59). Five samples had PCT values > 250 ng/ml and were excluded from this graph, but not from statistical analysis. ° shows outliers 1.5–3 times out of the interquartile range, * shows extreme outliers > 3 times out of the interquartile range