B5 - Immune Response Flashcards
1
Q
What is an antigen?
A
A protein which triggers antibody production and an immune response.
2
Q
What is an antibody?
A
Proteins synthesised by B-Lymphocytes in response to antigens
3
Q
Describe clonal expansion.
A
B cells carry antibodies on their surface. When a B cell and an antigen attach, it enters the cell via endocytosis and the antigen is presented on the surface. T helper cells bind to these and stimulate the B cell to divide.
4
Q
Which two cells can B cells divide into?
A
Plasma and memory cells
5
Q
Where do B cells concentrate?
A
Liver and Spleen
6
Q
Describe plasma cells.
A
Primary Immune Response
Survive only for a few days
7
Q
Describe memory cells.
A
Secondary immune response
Live for decades
Will divide into more plasma and memory cells upon meeting the same antigen
8
Q
A
