CCL26 and eosinophilic esophagitis: Surprisingly, histamine stimulation of EPC2-hTERT and primary cells did not induce either thymic stromal lymphopoetin (TSLP) or eotaxin-3 (CCL26) secretion, which are epithelial derived cytokines prominently linked to EoE pathogenesis [6,30,33] (data not shown).