T-cell immunity Subject – Science and Tech Context – COVID-19 vaccines produce T-cell immunity that lasts and works against virus variants Concept – A T cell is a type of lymphocyte. T cells are one of the important white blood cells of the immune system and play a central role in the adaptive […]

Subject: Science and tech Context: SARS-CoV-2-specific T cell immunity prevents recurrent severe COVID-19 disease Concept: T cells (also called T lymphocytes) are one of the major components of the adaptive immune system. Their roles include directly killing infected host cells, activating other immune cells, producing cytokines and regulating the immune response. There are two major types […]