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Pune University - SY BSc (Sem - II) VOC BIOTECH : Paper - II, April 2010

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Total No. of Questions : 4] P517 [Total No. of Pages : 2 [3717]-244 S.Y. B.Sc. (Vocational) BIOTECHNOLOGY VOC-Biotech-222 : Immunology (Sem. - II) (2008 Pattern) (Paper - II) Time : 2 Hours] [Max. Marks : 40 Instructions : 1) All questions are compulsory. 2) Figures to the right indicate full marks. 3) All questions carry equal marks. Q1) Answer each of the following in 1-2 lines. [10] a) Define : Cytokines. b) Enlist any two immunodiffusion techniques. c) Give the role of macrophages in immunity. d) Describe the significance of IgA. e) What are secondary lymphoid organs? f) Give any one example of passive immunisation. g) Explain haptens with example. h) How are attenuated vaccines prepared? i) Give any two mechanisms by which skin acts as a barrier against infection. j) What are the types of T cells involved in the specific immune response? Q2) Write short notes on any two of the following. (8-10 lines) a) Immunoglobulies structure. b) Humoral immune response. c) [10] Phagocytosis. P.T.O. 1 Q3) Attempt any two of the following. (8-10 lines) [10] a) Describe different types of antigens. b) Add a comment on hypersensitivity reaction. c) What is clonal selection theory? Give it's significance in antibody production. Q4) Describe the classical and alternative pathway of complement cascade in detail. [10] OR Describe the direct, indirect and sandwich method of ELISA. [3717]-244 -22

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Additional Info : S.Y. B.Sc. Biotechnology (Semister - I), VOC - Biotech - 222 : Imunology (Paper - II) (New Course) (2008 Patern) (Vocational), Pune University
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