definitions Flashcards
1
Q
antigen
A
proteins on the surface of cells which trigger an immune response
2
Q
pathogen
A
an organism which causes disease
3
Q
specific defence mechanism
A
- a longer lasting, slower response to specific pathogens
4
Q
give an example of a specific defence mechanism
A
B and T cells
5
Q
non-specific defence mechanism
A
- a faster response which act on ALL foreign materials
6
Q
give an example of a non-specific defence mechanism
A
- natural barrier
- phagocytes
7
Q
antibody
A
proteins which bind to antigens to kill pathogens. They are produced by lymphocytes as a response to a specific antigen
