ch 27 Flashcards
Antibody-mediated immunity is particularly effective against
extracellular pathogens
The part of the antigen recognized by the antibody is called the
epitope
Antibodies are found in
breast milk, mucosal secretions, and serum
.The most common circulating antibody, comprising about 80% of the serum immunoglobin, is
igG
The measurable strength of the binding of an antibody to antigen is called
binding affinity
Antigen exposure is necessary to
stimulate B cell differentiation, antibody production, and genetic hypermutation of
antibody genes.
Substances that induce an immune response are known as
immunogens
A serum containing antigen-specific antibodies is called an
antiserum
Which is an example of acquisition of natural passive immunity?
a fetus protected from disease by its mother’s antibodies
Which of these is often used as a prophylactic measure to protect a person against future
attack by a pathogen?
vaccination
After the first exposure to an antigen, a ________ stimulates growth and multiplication of
antigen-reactive cells.
primary adaptive immune response
The transfer of antibodies through the placenta from mother to fetus is an example of
natural passive immunity
The purposeful artificial stimulation of active immunity to a particular infectious disease is
known as
immunization
The antigen-binding site of an antibody accommodates a small portion of the antigen called
a(n)
epitope
In the adaptive immune response, effective immunity cannot be detected for several days
after the first contact with the pathogen.
True
