IL5 and eosinophilic esophagitis: In the cited study, the described relationship was justified by the high accuracy of the ELISA test used [44], which may also be reflected in our study (at the detection threshold of 5 pg/mL, the median IL-5 concentration in the group of patients with EoE was 4.07 pg/mL and 4.30 pg/mL in the control group).