Watch the body's defense unfold — from the innate response to immune memory.
Tap any cell or pathogen to open a full card: attributes, step-by-step action, partners, fun facts, and biomedical context.
For the best learning experience, follow this study order:
Lesson Mode
Explore each cell and pathogen card before simulating.
Simulator
Start an infection and watch the immune response in real time.
Learning Scenarios
Apply what you learned in guided situations with clear learning objectives.