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3 D 30191

Section C

Answer any six questions.

Each question carries 5 marks.

Write notes on:

23.
24.
25.
26.
27.
28.
29.
30.

Phagocytosis.
Structure and functions of slgA.
Antigen processing and presentation.
ELISA.
Typel hypersensitivity reactions.
Tumour antigens.
Systemic autoimmune diseases.
Methods for histocompatibility testing.
(6 x 5 = 30 marks)
Section D

Answer any two questions.
Each question carries 12 marks.

Write essays on:

31.

32.
33.

Discuss the experiments led to the determination of basic structure of immunoglobulin. Describe

the structure of human IgG with a suitable diagram.
Describe the structure and functions of lymphoid organs.

Discuss the role of complement system in immunity. Write a note on complement activation
pathways.

(2 x 12 = 24 marks)

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