Exam 10: Serologic Diagnosis of Infectious Diseases

A positive test was observed on a serum sample that resulted in the formation of a fine precipitate on a reaction card.The most likely organism serologically identified is:

Specific proteins produced by cells of the immune system in response to the presence of foreign molecules that circulate in the serum and are present in secretions such as saliva are called:

Cell-mediated immune responses, such as attacking and killing microorganisms or host cells that are damaged or infected, are carried out by:

A Western blot assay was performed, and bands were observed at p24, p41, and gp120/160 (kilodaltons).The organism can be identified as:

A pregnant woman had contact with her nephew who was just diagnosed with a rubella infection.Acute and convalescent samples were taken, which resulted in an acute titer of 1:16 and a convalescent titer of 1:32.Which one of the following comments explains the risk to the fetus?

The precipitin test that is widely used for detecting antibodies against fungal infection is referred to as:

A patient was suspected of having a rickettsial infection after hiking in the Rocky Mountains.A Weil-Felix test was performed, which resulted in no agglutination observed.Which one of the following statements explains this discrepancy?

For most pathogens to be diagnostic of current infection, there must be a(n)_____ in the patient's antibody titer of _____ doubling dilutions.

The immunochemical test that involves the agglutination of an artificial carrier particle with the antigen bound to its surface and an antibody present in a specimen is referred to as:

A method that uses an electrical current to speed up the migration of an antigen and antibody is referred to as:

Neutralizing antibodies are those that function by:

Elevations of which of the following antibodies may indicate a parasitic infection?

The study of the diagnosis of disease by measuring antibody levels in serum is called:

Complement-fixing antibodies are those that function by:

The difference between latex agglutination and hemagglutination is:

Opsonizing antibodies are those that function by:

The antibody that is predominantly found in tears, saliva, and intestinal secretions is:

Antibody-mediated immune responses produced by specific proteins are generated by:

The presence of which of the following antibodies usually indicates a recent or an active infection?

For an accurate diagnostic of a current infection, acute and convalescent sera should reflect a(n)_____ in the patient's antibody titer of _____ doubling dilutions.