Allen Institute Jan 22 2025 The human immune system is like an army of specialized soldiers (immune cells) each with a unique role to play in fighting disease. In a new study published in Nature , led by scientists at the Allen Institute, La Jolla Institute for Immunology, and UC San Diego, researchers reveal how cells known as tissue-resident memory CD8 T cells , play unique and specialized roles based on where they are located within the small intestine. Tissue-resident memory cells provide a