Hypersensitivity is due to

A) The presence of an antigen

B) Immunity

C) The presence of antibodies

D) An altered immune response

E) Allergies

The chemical mediators of anaphylaxis are

A) Found in basophils and mast cells

B) Antibodies

C) Antigens

D) Antigen-antibody complexes

E) The proteins of the complement system

Which of the following may result form systemic anaphylaxis?

A) Hay fever

B) Asthma

C) Shock

D) Hives

E) None of the above