Host Defenses II Flashcards
what is the third line of defense
adaptive immune response
immunological memory
rapid immune response during secondary exposure
which cell is the cellular response
T cells
which cell is the humoral response
B cell
goal of the adaptive immune system
eliminate an identified pathogen and remember it for next time
immunogenicity
ability of an antigen to cause an immune response
epitopes
specific molecular pattern recognized by immune system
complete antigens examples
proteins
polysaccharides
lipids
incomplete antigens
small molecules
4 stages of adaptive immunity
- antigen presentation
- lymphocyte activation
- lymphocyte proliferation and differentiation
- antigen elimination and memory
what activates the B or T cell
binding
clonal expansion
proliferation
what are CD proteins
cluster of differentiation proteins
important CD proteins
CD4 (helper) and CD8 (cytotoxic)
T cytotoxic cells
destroy cells
T helper cells
release cytokines
B cells (plasma cells)
secrete antibodies
B cells (memory cells)
remember pathogen
what does MHC mean
major histocompatibility complex