17889 IMG55 (4)
14 Leukocyte adhesion deficfency (LAD) type I.
S resufis from a defect In the synthesis of fucosylated Carbohydrates. o *s cnaracfensed by defects in neutrophil rołłmg and extravasation £ feads to to neutrophil adherence to endotheliał ttssue d causes recurrent bacterial and fungal infcctions
15. Cetfu lar imm unity inciudes ad of the fol łowi ng except
ą actrvated macrophages killing phagocytosed bactena b. CD8 T cells inducing apoptosis using Fas-FasL binding. ę. complement-mediated lysis of bactehal cells d MHC-resbicted cytotoxic T cells killing virus-infected cells ę NK cells performing natural killing of tumor cells.
16. CTL binding and destruction of target cells depends on
a. a co-stimulatory signal from the target celi.
b. antigen presentation on the surface of the target celi. ę. lack of a negative signal from MHC to prevent cytotoxicity. d presence of virus proteins in the membranę of the target celi. e secretion of cytokines by the infected celi to attract CTL.
17. CTL use perforin to
a. activate the classical complement cascade to łyse the target.
b. allow granzymes to enter the target celi and initiate apoptosis. ę. promote target celi lysis by macrophages.
d. stimulate the target cells to express Fas on their membranes
e. substitute for C9 in the alternative complement pathway.
18. Th1 cells promote cellular immunity by secreting primarily
a. IL-1 and IL-6.
b. IL-2 and IFNy.
c. IL-4 and IL-5.
d. IL-10 and IL-12.
e. TNFct and FasL.
19. Macrophages kill pathogens using ałl of the following EXCEPT
a. nitric oxide.
b. oxygen radicals.
c. perforins.
d. peroxides.
e. proteolytic enzymes.
20. T cells differ from B cells by expressing
** tp. ię> ity
a antigen receptor of only one idiotype. antigen receptor of only one isotype.
RAG-1 and RAG-2 during somatic recombination.
a surrogate Chain before somatic recombination of the second receptor Chain is complete signal transduction molecules with their antigen receptor.
Wyszukiwarka
Podobne podstrony:
IMG86 (3) erhans Cełls - Immature skin- associated dendritic cells that reside in the epidermis&nbs
IMG85 (3) Langerhans Cells - Immature skin* associated dendritic cells that reslde in the epidermis
IMG#20 32 Associative Principles and Democratic Reform Laski in ‘The Problem of Administrative Areas
Obraz (82) The Concept of Skquentiali iy in the Dkscription of Signs 31 FIGURĘ 1
55541 IMG#24 16 AssocMdw Principłes and Democratic Reform oonsaderabłe part in the course of public
14 Galii. Leucosiidae m. Urnalana gen. nov. Zool. Med. Leiden 79 (2005) fered from the type in the f
18 Waldemar Deluga 14 and Moldavia. There are several Moldavian editions illustrated with the e
IMG46 Ernst Mach nov s independent coursc took place in the spring of 1908, that is, a few months a
REIDER PART 155 Figurę 4-70. Assessing opposition strength. thumb toward the little finger in the a
więcej podobnych podstron