Shown is a box‐plot comparison of 2‐DE spot expression values for C4A (A), Albumin * 1 (B), fibrinogen (FBN, C), tropomyosin (D), IgG‐V (E) and albumin * 2 (F) by diagnosis. DF = dengue fever; DHF = dengue hemorrhagic fever; horizontal bar = median value; shaded box = 25–75 % interquartile range (IQR); error bars = median ± 1.5(IQR); *= outlier.