Hypersensitivity

Which of the following hypersensitivity types involves T-cell response?

• Type I

• Type II

• Type III

• Type IV

Which of the following hypersensitivities is mediated by IgE?

• Type I

• Type II

• Type III

• Type IV

Mast cells have important roles in the development of allergies. Which is not true?

• Their ability to produce IgE

• Their ubiquitous location in tissues

• Their capacity to bind IgE during sensitization

• Their ability o degranulate

Most abundant and fastest acting chemical released by mast cells?

• Serotonin

• Leukotriene

• Histamine

• Cytokines

Which of the following is NOT an autoimmune disease?

• SLE

• Serum sickness

• Type I diabetes

• Rheumatoid arthritis

A positive tuberculin skin test is an example of ____________ hypersensitivity reaction?

• Type I

• Type II

• Type III

• Type IV

What is the difference between type II and type III hypersensitivity reactions?

• Type III involve complement, while type II do not.

• Type III is T-cell mediated, Type II is B-cell mediated.

• Type III involves IgE, type II involves IgG and IgM.

• Antigens for type II are bound to a cell's surface, but not type III