T cells are specialized lymphocytes that have vital roles in the immune system. Since their initial description in the 1960s, they have become a major focus of immunology research. In this Nature Milestone on T cells, we explore the pivotal studies that advanced our understanding of various aspects of T cell biology, including their functions in health and disease and therapeutic potential.

The field of neuroimmunology has blossomed in recent years. This can be attributed to sophisticated technological advances as well as to the burgeoning collaboration of neuroscientists and immunologists. Articles in this Series reflect the fruits of these collaborative efforts and review our current understanding of the intricate crosstalk that takes place between the immune and nervous systems.

In this Collection, we bring you articles that highlight the latest research and insight into the immunology of SARS-CoV-2 and the associated disease COVID-19. They cover our emerging understanding of the immune response to this new coronavirus, prospects for vaccine development, immunopathology of COVID-19 and how it might be treated with immunomodulatory drugs.

A regularly updated list of upcoming immunology conferences, including virtual meetings