Which one of the following autoimmune disorders is associated with a high circulating concentration of T3 and T4, but a low concentration of TSH?

Antibody idiotype is dictated by the:

The following results are from a rubella titer performed on acute and convalescent sera using a 2-fold serial dilution: Acute serum titer:  1/8 (titer = 8) Convalescent serum titer:  1/32 (titer = 32) After evaluating the above results, the best interpretation is:

In skin tests, a wheal and flare development is indicative of:

The etiology of insulin-dependent diabetes mellitus is:

Which of the following immunoglobulins is present in the highest concentration in normal human serum?

The FTA-ABS test for the serological diagnosis of syphilis is:

Cholesterol is added to the antigen used in flocculation tests for syphilis to:

The serological test that can be modified to selectively detect only specific IgM antibody in untreated serum is:

The specificity of an immunoassay is determined by the: