Hypersensitivity Reactions — MCQs

All of the following forces are involved in antigen-antibody reactions, except:

Which among the following is an example of type I hypersensitivity reaction?

A 32 year old man presents with a 3-month history of weight loss, night sweats, a productive cough with blood-tinged sputum, anorexia, general malaise, and a low grade fever. A PPD skin test shows > 10 mm of induration. If the area of induration were biopsied, which of the following type of reactive cells would be found?

Which type of hypersensitivity reaction is characterized by immune complex formation?

A child has a rash. His family history is positive for asthma. What could be the most probable diagnosis?

In a case of glomerulonephritis (GN), C3 is normal in all the following except?

Which of the following substances is primarily synthesized and secreted by mast cells?

Which is the best investigation to confirm diagnosis of anaphylaxis?

Which of the following best denotes classical complement pathway activation in immune inflammatory conditions?

All of the following are features of Goodpasture syndrome, except for which of the following?