3 concepts
Cells and Organs of the Immune System
The immune system includes primary lymphoid organs, secondary lymphatic tissues and various cells in the innate and adaptive immune systems.
Overview of Human-Microbial Reactions
Human-microbial interactions can be commensal or mutualistic, as with many types of gut flora, or harmful, as with pathogenic bacteria.
Overview of the Immune System
The immune system is a system of biological structures and processes within an organism that protects against disease.