Haemic and immune systems articles from across Nature Portfolio

Savvidis et al. present x-ray 3D imaging visualizing the internal anatomy of the human thymus across developmental stages. Quantification and evolution of Hassall’s bodies and medulla-to-cortex ratio, indicate they should be considered a third compartment of the thymic anatomy.

Stem-like and effector-like peripheral helper T cells have distinct functions in rheumatoid arthritis.