The Expression of Immune Checkpoint Inhibitors PDL-1 and CTLA-4 in Pancreatic Versus Non-Pancreatic Periampullary Adenocarcinoma: An Immunohistochemical Study

Abstract

max 250 words, single paragraph): The abstract should be complete and understandable without citation, references, table, or figure. Use structured abstract: Background, Aim, Materials & Methods, Results and Conclusion. The context and the rationale of the study are presented succinctly to support the objectives. The experimental methods and main results are summarized but should not be overburdened by numerical values or probability values. The abstract ends with a short and clear conclusion.