Test 3

Question 1

what pathegones are cellular immune can portect from ?

Answer 1

1-viral infection
2-some fungai nfection
3-parasitis diseas
4-some bactria such as sinosides

Question 2

the cellular iommune respons for what ?

Answer 2

1- deylad haypersenstivty
2-transplantion rejaction
3-possable tumer survalince

Question 3

the main function of T helper cells

Answer 3

1- t Helper they mnatin the intensity of the body immune respones
2-T cytocoxic which are dirctly attack the antigen on the surface of the forgein cells

Question 4

diifraince betwen T cells and natural killers

Answer 4

— Tcells
1- time : 1-2 hours
2- antigen spicifc : NO
3- receptor on surface : (CD16) cluster of differentiation 16
— NK
1- time : 3-4 days
2- antigen spicifc : yes
3- receptor on surface : (CD8) cluster of differentiation 8

Question 5

common propirties of T helpers and NK

Answer 5

1- the smae group factor = iL-2
2- Conatin Granules wiht potant chemical
3-they both killes Cancer cells and virus cells

Question 6

explain the antiviral mechansim

Answer 6

1-antigen phagocytes by apc and exposed digstion
2-As result of digstion formed chain of amino acid 15-20 amino acid
3-this chain exhbited on the surface of APC and presnting TH1
4-the TH1 produce Tumor necrosis factor (TNF) and Interferons (IFNs) which activate T killers
5-T killers binds its target and and cuases apoptosis of the target cell