Ulrich von Andrian is a German Immunologist and professor of Microbiology and Immunobiology at Harvard University.
He is best known for his work in the areas of leukocyte trafficking and the regulation of immune responses in lymph nodes, with a focus on how T-cell and B-cell-specific responses to antigen are initiated and how antigen is transported to the lymph nodes and presented by APCs.
von Andrian et al. have worked on uncovering the multi-step adhesion cascades that direct leukocyte subsets from the blood into various tissues in the body.
His group has also characterized the dynamics of T-cell interactions with antigen-presenting dendritic cells and identified a critical role for macrophages at the lymph-tissue boundary.
His laboratory has also identified a subset of natural killer cells that acquires antigen-specific memory to haptens and viruses.