[Free Registration/Login may be required to access all resource tools.] Which is stronger? You or little tiny pathogens? Usually you are. Normally your body can put up a strong defense against enemy pathogens. But what if it can't? What happens if your immune system is "sick"? In the following tutorial you will begin to understand immunodeficiency, and also list reasons for it.

Concepts

pathogens

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Additional Tags

immune system, b cells, ck-12 episd, immunodeficiency, immunity conditions and illnesses

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Classroom Considerations

• Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)