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Question 1 The most abundant antibody in our bodies is DAG BIA Oc IgM ODID OBIE
Question 2 In the early stages of infection, you will expect to find O A. Macrophages OB. Neutrophils oc. B and D are correct
Question 3 The following are involved in cell signaling IL-12 OA. O B. IFNY All of the above are involved in cell signaling a
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Answer #1

Answer 1 : A. IgG

Explanation : IgG is the most abundant antibody in the blood plasma. IgG antibodies are the smallest but represents approximately 75% of the serum antibodies in human. IgG antibodies are very important in fighting with bacterial and viral infections.

​​​​​​Answer 2 : B. Neutrophils

Explanation : Neutrophils are a type of white blood cells which have significant roles of protecting body against infections. Bone marrow is the site of neutrophil production. Being highly motile, neutrophils quickly arrive at the site of injury or infection to protect the body from invading microbes.

Answer 3 : C. All of the above are involved in cell signalling

Explanation : IL-12, INF-gamma, TNF-alpha, IL-2 are examples of various types of cytokines, a broad category of protein involved in cell signalling. There are various types of cytokines available in the body e.g. interleukins (IL-2, IL-12), interferons (INF-gamma), tumor necrosis factor (TNF-alpha), chemokines, lymphokins etc. Cytokines are released by cells and affect the function and behaviour of either the cell of their production or some other cells. Cytokines are a significant part of immune system as they regulate immune response by Chemical signalling.

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