Which One of the Following Statements About Dendritic Cells Is

question 16

Multiple Choice

Which one of the following statements about dendritic cells is true?

• A)Immature dendritic cells are ubiquitously present in skin and mucosal tissues.
• B)Dendritic cell maturation occurs after migration to lymph nodes in response to signals derived from activated T cells.
• C)Class II MHC and T cell costimulators are highly expressed on immature dendritic cells and are down-regulated during maturation.
• D)Dendritic cells that enter lymph nodes through draining lymphatics migrate to the B cell-rich follicles in response to chemokines.
• E)The principal function of mature dendritic cells is antigen capture.

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Definitions:

Probability Density Function

A mathematical function that describes the likelihood of different possible outcomes in a continuous random variable.

Exponential Distribution

A continuous probability distribution that is used to model the time between events in a Poisson point process.

Poisson Model

A statistical model used to predict the number of events occurring within a fixed interval of time or space, assuming events occur with a known constant rate and independently of the time since the last event.

Exponential Random Variable

A type of continuous random variable often used to model the time between events in a process with a constant rate.