19. Innate Immunity

Neisseria meningitidis escapes immune detection by which of the following mechanisms?

Antibodies can make it easier for phagocytes to destroy pathogens by causing the pathogens to:

The specificity of an antibody is due to which of the following?

Which of the following statements is NOT true of the classical pathway of complement activation?

Which of the following chemicals attach to pathogens and label them as foreign bodies to be destroyed by the immune system?

Which of the following is required for a positive result in an indirect ELISA assay?

Which of the following statements about blood group systems other than ABO and Rh is INCORRECT?

Which of the following is NOT a major organ that can be a target of immune complex deposition?

Which of the following is considered a second line of defense in the human immune system?

Which of the following are considered the main portals of entry for pathogens into the human body?

Which of the following primarily mediates the adaptive (specific) defense system in humans?

Which is the most abundant class of antibodies found in human serum?

The complement cascade and its by-products contribute to which of the following immune responses?

In the context of infectious diseases, what is meant by a disease's immunity threshold?

Which of the following is a common strategy used by bacterial pathogens to evade the host immune response?