In twelfth-century China, people seeking protection from smallpox removed scabs from people mildly scarred from the disease - HSC - SSCE Biology - Question 23 - 2001 - Paper 1
Question 23
In twelfth-century China, people seeking protection from smallpox removed scabs from people mildly scarred from the disease. These scabs were then ground and inhaled... show full transcript
Worked Solution & Example Answer:In twelfth-century China, people seeking protection from smallpox removed scabs from people mildly scarred from the disease - HSC - SSCE Biology - Question 23 - 2001 - Paper 1
Step 1
Explain the immune response and the role of antigens
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Answer
When the scabs are introduced into a healthy person, they carry live smallpox antigens. The body recognizes these antigens as foreign substances, triggering an immune response.
Step 2
Describe the production of B and T cells
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Answer
The introduction of the scabs stimulates the production of specific B cells that generate antibodies against the smallpox virus, as well as T cells that can help eliminate infected cells.
Step 3
Discuss the development of immunity
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Answer
This immune response leads to the development of immunological memory. If the person is later exposed to the actual smallpox virus, their immune system can recognize and respond more rapidly and effectively, providing protection against the disease.
