762167
Description
Quiz by gina_evans0312, updated more than 1 year ago
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Created by gina_evans0312
about 10 years ago
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Question 1
Question
Th cells are activated by MHCII and a co-stimulation signal
Answer
- True
- False
Question 2
Question
CD4 T-cells are a major source of cytokines after activation
Answer
- True
- False
Question 3
Question
Which of the following is a major autokrine stimulator for clonal proliferation of Th cells?
Answer
-
IL2
-
IL3
-
IL4
Question 4
Question
Which of the following is not a factor in CD4 cell polarisation?
Answer
-
Infection type (I.e. does the microenvironment indicate a fungus, a virus?)
-
Amount of antigen/binding strength of antigen
-
'Dose' of infection
Question 5
Question
Production of cytokines by one type of Th cell, causes the polaristion of native Th cells to the type that produced the cytokines (i.e. Th1 produced cytokines encourage Th1 conversion)
Answer
- True
- False
Question 6
Question
During non-infection, which cell is predominant?
Answer
-
Th1
-
Th2
-
Neither, till infection tips the balance
Question 7
Question
Name ways in which the activity of cytokines can be controlled
Answer
-
Short half life- only effect nearby cells
-
Specific receptors prevent unwanted signalling
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High concentrations needed for cell activation
-
Active destruction by incorrect cells
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