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Figure 1 This graph illustrates the comparison between the patient group and the control group in terms of the serum interleukin15 level (Z=7.698, P≤0.0001). The data are presented as boxplots. The boxes represent the 25^{th} to 75^{th} percentiles; the minimal and maximal values are represented as the below boxes and above boxes lines outside the boxes, respectively. IL15, interleukin15; Z, value of Mann–Whitney test for comparing between the two groups. 
