Which of the Following Statements Are True of Vaccines? (Read

Multiple Choice

Which of the following statements are true of vaccines? (Read carefully and select all of the correct statements.)

A) Vaccines contain antigens to stimulate antibody production.
B) A vaccine antigen may be a pathogen that has been killed or attenuateD.
C) A vaccine antigen may be part of a pathogen or a toxoid.
D) The purpose of a vaccine is to take the place of a first exposure to a pathogen.
E) A vaccine stimulates the creation of memory cells (T or B or both) to a specific antigen.
F) On a second exposure to a pathogen, antibody production has a lag period, then IgG production follows IgA production.