Hospital for Special Surgery Jun 26 2026 Reviewed Researchers at Hospital for Special Surgery (HSS) have uncovered a critical link between the immune system in early life and its function in adulthood. The study, published in Science Immunology , identifies a new role for specialized skin immune cells, called Langerhans cells, in shaping the development of lymphatic vessels-an essential part of the body's immune network. Lymphatic vessels act as communication highways, carrying signals from