CAF-derived thymic stromal lymphopoietin (TSLP) modulated dendritic cell (DC) cytokine profiles to favor Th2 polarization in vitro. Further analysis demonstrated that TSLP is derived from CAFs; correspondingly, TSLP receptor-positive DCs are found only in the tumor and tumor-draining lymph nodes [14]. Here, TSLP is linked to neoplasm.