Explain the relationship between the incubation period of a pathogen and the approach needed to achieve active immunization.

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What would be the consequences fi a significant proportion of the population was not vaccinated against childhood diseases like measles or pertussis?

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Compare the following : (i) Sabin and Salk polio vaccine (ii) Active and Passive immunization.

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Distinguish between Atopic dermatitis and Contact dermatitis.

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What immunologic mechanisms most likely account for aperson’s developing each of the following reactions, after an insect bite? (i) Within 1-2 minutes after being bitten, swelling and redness appear at the site and then disappear by 1 h.r (ii) 6-8 hrs later, swelling and redness again appear and persist for 24 hrs. (iii) 72 hrs … Read more

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What is measured by Sandwich ELISA?

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RBCs, unlike nucleated cells, aer more sensitive to complement mediated cell lysis. Explain why?

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Why does the human system has three separate complement pathways when all of them converge to a single result, i.e. cell lysis?

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What is agglutination inhibition? Briefly state one application of this method.

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For each of the following set of cells, state the latest common progenitor cel that gives rise to both cell types — ( i) Monocytes and neutrophils (ii) Natural killer cells and B cells.

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