TY - JOUR A1 - Harker, JA A1 - Pallett, LJ JF - Immunology UR - https://doi.org/10.1111/imm.13197 N2 - Our barrier surfaces are fundamental in protecting us from the outside world and segregating key biological processes. The immunological fortifications found at these sites therefore possess many distinct qualities, which are discussed in Immunology 's series of reviews on Barrier Immunity. Together these reviews showcase novel biological processes identified through the use of state?of?the?art technologies, and specifically highlight how these change throughout our lives. ID - discovery10100557 IS - 2 N1 - This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/ AV - public Y1 - 2020/06// VL - 160 SP - 103 EP - 105 TI - Immunological fortification at our barrier organs: Protecting us as we age ER -