Antigen- Middle Part Flashcards
What are antigens that invade a host from outside and then grow in the hosts tissues and extracellular fluid?
Exogenous antigens
What antigens are processed in phagosomes in antigen-presenting cells, such as dendritic cells, macrophages, and B cells, to the adaptive immune system?
Exogenous antigens
What antigens are typified by bacteria?
Exogenous
What are antigens that are produced by a host cell?
Endogenous antigens
What antigens are processed by proteasomes in the cells in which they are produced?
Endogenous
What type of antigens are autoantigens (self-antigens) classified as?
Endogenous
Endogenous antigens have antigen presentation to what type of T cells?
CD8+
Exogenous antigens has antigen presentation to what type of T cells?
CD4+
What is the ability of an antigen to provoke an immune response in the body of a human or an animal?
Immunogenicity
What is the capacity of an antigen to bind specific T cells or B cells?
Antigenicity
What is when, in general, foreign proteins make the antigens of good immunogenicity?
Foreignness
How long does it take for a transplant to be rejected by the same species?
10 days
How long does it take for a transplant to be rejected by a different species?
Few hours
______ molecules are better antigens than ______ molecules
Larger
Small
What are clostridial toxin, bacterial flagella, and virus capsids examples of?
Large proteins
What type of polysaccharides are NOT good antigens because they are often degraded before the immune system has time to respond to them?
Simple
More _______ carbohydrates may be effective antigens, especially if bound to proteins
Complex
________-_____ glycoproteins of red blood cells are good antigens
Blood-group
What type of antibodies are present in unimmunized animals?
Blood-group
How are blood-group antibodies of unvaccinated animals present?
Through exposure from intestinal micro biota or food
What type of red blood cell type has Anti-B antibodies in plasma?
Group A
What type of red blood cell has A antigens in the blood?
Group A
What type of antibodies do group B blood cell types have?
Anti-A
What type of antigens are in group B red blood cells?
B antigens
What type of antibodies are in group AB red blood cells plasma?
None
What type of antibodies are in group O red blood cell plasma?
Anti-A and Anti-B
What type of antigens are in group O red blood cells?
None
The immunogenicity of an antigen is dictated by many factors, what is an example of one factor?
Route of administration
How does a pig with type “O” get antibodies against blood type A and B antigens?
Immune responses to food and bacterial antigens
Fishes are ________ ___________
Foreign antigens
