Outcomes of Antibody Binding to Antigen Practice Problems

Why are enzyme-linked antibodies used in direct ELISA for drug detection?

Which of the following is NOT a step in the process of B cell activation as an APC?

The phenomena in which antibodies react with epitopes of bacterial cells, causing them to clump is called:

What is the primary role of precipitation reactions involving soluble antigens and IgG or IgM antibodies?

All of the following tests can detect the presence of antibodies except:

Which serological test is utilized in the pregnancy test?

Tuberculin skin testing is commonly employed to identify Mycobacterium tuberculosis infection. If the result comes out positive 3 days after the injection, what specific parameter is being measured through this test?

Direct agglutination tests can be used to measure which of the following:

Direct ELISA test can used to detect:

Indirect ELISA can detect the following, except:

The immunodiffusion test is useful for:

Suppose you are studying the components of an unknown blood sample. Upon adding Coombs' reagent you noticed an agglutination reaction. Considering that the Coombs' reagent contains antihuman antibodies, which of the following statements about the unknown blood sample could be true?

Hemagglutination assay is commonly used to diagnose infections from different pathogens such as Chlamydia and influenza virus. Which of the following is considered the carrier particles in this test?

Which of the following may result in tissue transplantation rejection?

Which statement about the function of antibodies is incorrect?

Which of the following should be done immediately if a patient experiences fever, lower back and chest pain, tachycardia, and reduced blood pressure during a blood transfusion?

Graft-versus-host disease is an example of type IV hypersensitivity. Type IV hypersensitivity is defined as:

Which of the following statements is false?

What happens when antibodies bind to viral surface proteins?

What role do antibodies play in a sandwich ELISA pregnancy test?

Which of the following is a key advantage of indirect ELISA over direct ELISA?

In medical diagnostics, identifying how antibodies interact with specific pathogens' markers in plasma falls under __________.

Anti-mouse antibody antibodies are typically __________.

The region where neither the antigen nor the antibody is in excess, leading to maximal precipitation, is known as:

In immunology research, a secondary antibody is typically employed when ___________.