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.

Question

Quizplus · Accepted Answer

Vaccines work by introducing antigens to the body to stimulate the immune system to produce antibodies and memory cells, mimicking a first exposure to a pathogen. These antigens can be in the form of killed or attenuated pathogens, parts of pathogens, or toxoids. The purpose is to prepare the immune system for future exposures. However, the statement about IgG and IgA production is incorrect; typically, IgM is produced first, followed by IgG.

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