finalB 03

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10. A lack of T suppressor celi activity may result in:

self tolerance

b)    inappropriate MHC expression

c)    clonal deletion    ___,

d)    modification of self antigens autoimmune disease

11. Which of the following diseases is organ-specific? ^a)) Sjógren’s syndrome rheumatoid arthritis Grave’s disease

JBf systemie lupus erythematosus

e)    scleroderma

fl2) Graft between members of different species is termed: a) autologous (autograft)

l=z.

b) isologous (isograft) 1 _ c) homologous

d) allograft    -

heterologous (xenograft)

13. jGraft-verstts-hest-(GV H) disease occurs:

a) when an immunocompetent host is grafted with foreign immunocompetent lymphoid cells when an iminunocomprornised host is grafted with foreign immunocompetent lymphoid cells fwhen an immunocompetent host recogniłeś..the foreign antigens on grafted cells and mounts an unmune response

jSf when an immunocompromised host is grafted with foreign immunocompromised lymphoid cells when an immunocompromised host is grafted with self immunocompetent lymphoid cells

14.    Which of the antigens is present on the membranes of professional antigen presenting cells? a) onły MHC I

^b) only MHC II

both MHC I and MHC II d) no MHC