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Lesson 2

Lesson 2: The Human Immune System (Organs, Cells, and Antibodies)

Lesson parts

2.1 OverviewOverview2.1

2.2 Lymphoid organsLymphoid organs2.2

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2.3 Worked example 5 — why swollen glands?Worked example 5 — why swollen glands?2.3

2.4 Summary table — lymphoid organsSummary table — lymphoid organs2.4

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2.5 White blood cells (leukocytes)White blood cells (leukocytes)2.5

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2.6 AntigensAntigens2.6

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2.7 Helper chemicalsHelper chemicals2.7

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2.8 Worked example 6 — why do interferons protect neighbours?Worked example 6 — why do interferons protect neighbours?2.8

2.9 AntibodiesAntibodies2.9

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2.10 Structure of an antibodyStructure of an antibody2.10

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2.11 How antibodies actHow antibodies act2.11

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2.12 Worked example 7 — classify the mechanismWorked example 7 — classify the mechanism2.12