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Humans are protected by two branches of the immune system. Innate immunity provides built-in defense against widespread characteristics of bacteria and viruses, while adaptive immunity memorizes ...

Innate immunity is mediated by different cell types and cell-associated or fluid-phase pattern-recognition molecules and plays a key role in tissue repair and resistance against pathogens. 1 Exposure ...

Scanning electron micrograph of a human T lymphocyte (T cell) from a healthy donor's immune system. [National Institute of Allergy and Infectious Diseases/NIH] When a tissue experiences inflammation, ...

Trained immunity is a newly emerging concept that defines the ability of the innate immune system to form immune memory and provide long-lasting protection against foreign invaders. The human immune ...

A new study published on the preprint server medRxiv* in June 2020 shows that the drug hydroxychloroquine (HCQ) suppresses a form of immunity called ‘trained immunity,’ with repercussions for its ...