Immunology 2nd lecture Flashcards
after _______ dies, calls the __________
neutrophil, dendritic cell
after being called, ________ goes to ___________
dendritic cell, regional lymph nodes
2 types of adaptive immune response
1) Humoral (immunoglobin/antibody mediated)
2) cell-mediated (T cell/lymphocyte factor)
Both ____ and ____ response have ______
innate, adaptive, humoral factors
All three immune responses ( 3 ) have _____ and _______ factors in the _____ immune process
Innate, Adaptive humoral, adaptive cell-mediated, humoral, cellular, early
_____ limb made of events that ________ immune response. Events from ______ immunity to interaction with the __________. This limb will have both ____ and _______ components in both _____ and ________ immune response
Afferent, initiate, innate, T helper (Th) CD4+ lymphocyte, cellular, humoral
_____ limb is the effector, or _____ aspect of immunity. In humoral response, this will be _______ molecules dissolved in _____ that will engage the _________ (also .. in fluid) In cellular response, this will be __________
Efferent, killer, antibody, fluid, complement system, T cytotoxic cells (Tc) CD8+ lymphocytes
The immune response is _____ and ____ specific
epitope, antigen
CD molecules are found on _________. They act as _____ for ____________. They ______ immune response. In immunity, they act as ____ or ____ important to the cell and initiate a _________.
cell surface, targets for immunophenotyping (of the cell). induce. ligands or receptors. signal cascade.
Three cells are called APCs ( _ _ _ ), they have a _________ and present ___ + ___. Those cells are (note the most important) …
antigen presenting cells, class 2 MHC and present MHC II + peptide. interdigitating dendritic cells (most important), macrophages, B lymphocytes
________ is __ positive and ______ is _____ positive
T helper cell CD4, T cytotoxic cell CD8
Neutrophil phagocytosis steps. (4-5). The microbial pathogen never ____ cytoplasm
1) Endocytosis 2) Phagosome formation 3) Fuses with lysosome, a sack of enzymes 4) Phagolysosome (digestion by enzymes) 5) Release of end products in cell and neutrophil death
________ found on all _________ shuts down __________ with a __________
MHC class 1, all cells, natural killer cell, negative signal
when _______ is activated (which means the __________ on the cell was ________ or ______), it releases _____________ inducing ____________ in target cell
natural killer cell, MHC class 1, absent or alterated, granule contents, apoptosis (programmed cell death)
2 types of cells activate natural killer cell because they lack ____________
Cancel cell and virally infected cell because they lack normal MHC class 1 molecule
In the innate or adaptive humoral response, three pathways that lead to ________ activation and that can be called a molecule ___________
innate, complement, waterfall
1) Classical pathway -> Antigen:Antibody complexes.
2) MB-lectin pathway -> Lectin binding to pathogen surfaces
3) Alternative pathway -> Pathogen surfaces (PAMPs)
complement __________ is important in _______ and ________ immune response
activation, innate, adaptive
Complement activation can lead to three things (3 major functions of the complement)
1) Recruitment of inflammatory cells (neutrophils -> major killer)
2) Opsonization of pathogens (coating them to make them more ‘tasty’ for neutrophils’)
3) Killing of pathogens -> Network of molecules drill hole in bacterial membrane
Each MHC has a __________ tail and a ________ where the _________ (which has no ________ in ________ cells) is presented
cytoplasmic, groove, peptide/epitope, specificity, dendritic cells