TSLP and neoplasm: Conversely, when PDAC were classified by degree of tumor differentiation, well-differentiated tumors (grade 1) showed greater TSLP expression than did poorly-differentiated tumors (grades 2/3 plus 3) [IRS median (range): 75 (47–261), vs. 4 (0–150), respectively, p < 0.05], while moderately-differentiated tumors (grade 2) expressed similar TSLP levels both to well-differentiated tumors [IRS median (range) 85 (0–190) vs. 75 (47–261), p > 0.05] and poorly-differentiated tumors [IRS median (range) 85 (0–190) vs. 4 (0–150), p > 0.05] (Figure 2C).