Immunity Flashcards
Pathogen
Micro-organism that causes disease
Antigen
A protein that triggers an immune response
Antibody
Protein that
Phagosome
Hebe
Lysozyme
Hygiene
Phagolysosome
The product of a phagosome and a lysosome fusing together. Allows lysozymes to hydrolyse the pathogen
Exocytosis
Jesus
Phagocytosis
Shen
Why do cells have antigens?
For cell recognition (self or non-self)
Which type of lymphocyte is involved in cell mediated immunity?
T- lymphocytes
Which type of lymphocyte is involved in humeral immunity?
B- lymphocytes
Where are T-lymphocytes mature?
Thymus gland
Where are B-lymphocytes mature?
Bone marrow
Which cells are antigen presenting cells?
Phagocytes after engulfing a pathogen.
Body cells infected by viruses.
Donor organs.
Cancer cells
Clonal selection
Only specific T-cells are activated because they are complementary to the antigen. When this is activated and cloned, all of the T-cells will then be complementary