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