Immune response mediated by B lymphocytes, providing protection against bacteria and neutralising toxins

The body's surveillance system that determines "self" from foreign substances

Crucial lymphocytes that enhance the functioning of cytotoxic T cells, B cells, and macrophages

The body's fast, broad defence providing general protection against a variety of pathogens

A slower, more targeted immune process involving lymphocytes with specific antigen receptors

Immune response that operates at the cellular level, involving T lymphocytes from the thymus gland

Immune cells designed to recognise and lyse viral infections or cancer cells