Chapter 9 host response to infection Flashcards
A substance recognized by the immune system
Antigen
The structure in the antigen that is recognized by the B cells
Epitope
A substance that is of low molecular weight that can only induce an immune respond if bound to another substance
Hapten
Any substance capable of inducing an immune response
Immunogen
Study of immune system
Immunology
are the primary sites for differentiation and maturation if the important cells that play an important role in adaptive immunity
Central lymphoid organs
Also known as natural immunity. active from time of birth
Innate immunity
Specific and activated after exposure to particular antigen
Adaptive immunity
involved cytokines and the complement system
Humoral immunity
A monomer and the predominant antibody in the secondary immune response
IgG
The largest among the immunoglobulins
IgM
Called the secretory immunoglobulin
IgA
Also called the reaginic antibody
IgE
A monomer that has no known antibody function
IgD
causes lysis of bacterial cell
Membrane attack complex (MAC)
is activated by bacterial products such as endotoxin or complexes of immunoglobulins
Alternative or properdin pathway
Is activated by specific patterns of sugars found on the bacterial cell wall
Mannose binding lectin or MBL