Due to the lack of commercially available ST2L‐specific antibodies, identifying ST2L‐positive cells other than the tumor cells was challenging; however, we observed a small number of ST2+CD90+ cells, which were likely group 2 innate lymphoid cells (ILC2s) with protumorigenic activity [19], in Panc02‐shCont tumors (Fig. S3). Here, THY1 is linked to neoplasm.