Macrophages are characterized by:

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:

The etiology of insulin-dependent diabetes mellitus is:

Cold agglutinins are often found in the serum of a patient with

For diagnosis of late latent or tertiary syphilis, the MOST appropriate assay is:

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

Substances that are antigenic only when coupled to a protein carrier are:

Acquired (adaptive) immune response differs from innate (natural) immune response in that the acquired immune response:

An example of an organ specific disease with autoimmune antibodies is:

Which of the following blood components must be prepared within 8 hours after phlebotomy?