20 July 2021
Vol 14, Issue 692

About The Cover

Cover image expansion

Online Cover This week features a Research Article that demonstrates that the development of IL-17A–secreting γδ T cells in the thymus is sensitive to the strength of T cell receptor signaling. The image shows a section of tissue from a thymus that includes several thymic lobules. T cells are produced in the densely stained cortex of each lobule. [Image: MicroScape/Science Source]