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OpenLearn Create will be unavailable on Wednesday 18 March 2026 from 8am to 10am due to routine maintenance.
OpenLearn Create will be unavailable on Wednesday 18 March 2026 from 8am to 10am due to routine maintenance.
OpenLearn Create will be unavailable on Wednesday 18 March 2026 from 8am to 10am due to routine maintenance.
Immunization

Immunization

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Figure 1.2  Three types of lymphocytes involved in the immune response against infectious agents in the human body. (Diagram: Dr Ignacio Romero)

 1.1.1  How does the immune system protect us from infection?