Fibroblasts were embedded into collagen gel matrices and allowed to contract for 4 days. (A) Images of representative gel matrices from Day 0 and Day 4 are shown in panel. (B) Average percent contraction of gels after 4 days of contraction with and without TGFβ in all four patient phenotypes showed significant increases in contraction with TGFβ stimulation of pediatric normal (p=0.01), pediatric EoE (p=0.0015), and adult EoE (p=0.0003) but not adult normal fibroblasts. n=5,7,11, and 4, respectively. *p<0.05 compared to TGFβ(-).