This is a list of immune cells, also known as white blood cells, white cells, leukocytes, or leucocytes. They are cells involved in protecting the body against both infectious disease and foreign invaders.

Neutrophils, the most numerous innate immune cell, patrol for problems by circulating in the bloodstream. They can phagocytose, or ingest, bacteria, degrading them inside special …

Nov 29, 2025 · What is the function of T cells and B cells in acquired immunity? T cells attack invaders directly and are involved in cell-mediated immunity. B cells secrete antibodies that bind to antigens, …

Although some antigens (Ags) can stimulate the immune response directly, T cell–dependent acquired immune responses typically require antigen-presenting cells (APCs) to present antigen-derived …

May 17, 2022 · In the blood and the lymph and populating the lymphoid organs are various types of white blood cells (leukocytes) that play a key role in the body’s immune responses, therefore defining …

Jul 23, 2025 · Explore the diverse cells that form our immune system. Understand their unique origins and how they coordinate to provide both rapid and specific protection.

Aug 3, 2025 · At the heart of this system are the immune cells—each with a unique function in detecting, responding to, and remembering pathogens. These vital defenders originate from a common source: …