Deck 5 Flashcards
Antigenicity means the ability of a substance:
To bind specific antibodies
Antibodies in defence against extracellular pathogens are NOT required for:
direct killing of invaders
By skin test in cattle with bovine tuberculin is tested the presence of:
Memory Th1 lymphocytes specific for mycobacterium bovis
Ileal Peyer’s patches is for:
development of mature B cells in Ru, dogs and swine
Spleen is for:
blood filtration and trapping of antigen from blood
Thymus is for:
development of mature T cells
IL-1 is produced by macrophages and acts on the hypothalamus to induce fever. This is an example of:
endocrine action
Anti-inflammatory action of corticosteroids is given by inhibition of:
phospholipase A
NF-kB
Superantigens:
Non-specifically bind to MHC class II molecule on antigen presenting cells and to TCR on T helper cells
Cause non-specific activation of T-cells, resulting in polyclonal T cell activation and massive cytokine production
The anaphylatoxic effect has:
C5a and C3a
Killing of virus by NK cells is or is not an antiviral mechanism used by the immune system?
Is NOT
Antiviral mechanisms used by the immune system include:
IFN activation of virus-infected cells
Lysis of virus by complement
Lysis of virus-infected cells by complement
The primary purpose of the adaptive immune system is to:
Protect from disease upon re-infection with a specific pathogen
Coombs test is used for the diagnostic of disease caused by hypersensitivity:
type II
Positive selection of T-lymphocytes ensures that the T-lymphocytes recognise:
Self-MHC molecules survive