0 -> Pancreatic_cancer_cells__C Pancreatic_cancer_cells__C -> 0 Pancreatic_cancer_cells__C -> 0 0 -> Pancreatic_stellate_cells__P Pancreatic_stellate_cells__P -> 0 0 -> CD8__T_cells__T CD8__T_cells__T -> 0 CD8__T_cells__T -> 0 CD8__T_cells__T -> 0 0 -> CD8__T_cells__T 0 -> CD8__T_cells__T 0 -> CD8__T_cells__T 0 -> NK_cells__N NK_cells__N -> 0 NK_cells__N -> 0 0 -> NK_cells__N 0 -> NK_cells__N 0 -> helper_T_cells__H helper_T_cells__H -> 0 helper_T_cells__H -> 0 0 -> helper_T_cells__H 0 -> helper_T_cells__H 0 -> Pancreatic_cancer_cells__C 0 -> Pancreatic_stellate_cells__P