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As an initial screening test for peanut allergy, a patient’s serum is found to test strongly positive for peanut-specific IgE.  The clinician orders an additional panel of tests for IgE directed against five different peanut components.  Which of the following statements is not only true but also provides the most accurate rationale for peanut component testing?

Most of the antibody present in human serum is found in which of the following electrophoretic regions:

Which of the following assays would be the most appropriate for assessing the prognosis of rheumatoid arthritis, i.e., predicting the progression to severe, erosive (deforming) arthritis:

Boys with congenital Bruton’s agammaglobulinemia present with recurrent pyogenic infections at the time when maternal antibodies in the boy’s serum begin to fall off significantly.  This occurs:

Which of the following serum tests is the best for screening for systemic lupus erythematosus, i.e., has the best sensitivity for screening?

A child eats some peanuts and within minutes, develops urticaria (hives) involving their lips and becomes short of breath.  This reaction is mediated by:

In the context of Type I hypersensitivity (Immediate type hypersensitivity), the antigens which play a role in initiating the hypersensitive reaction are also known as:

A child eats some peanuts and within minutes, develops urticaria (hives) involving their lips and becomes short of breath.  This reaction is mediated by:

What are the two most important risk factors for type 2 diabetes?

Common variable immunodeficiency is often diagnosed in adulthood.  It is characterized by: