Review Role of the Immune System in Renal Transplantation, Types of Response, Technical Approaches and Current Challenges Aitor Etxebarria 1, Eguzkiñe Díez-Martín 1,2 , Egoitz Astigarraga 1 and Gabriel Barreda-Gómez 1,* 1 Research and Development Department, IMG Pharma Biotech S.L., 48160...