Which of the Following Cell-Surface Glycoproteins Is Characteristic of Stem

question 15

Multiple Choice

Which of the following cell-surface glycoproteins is characteristic of stem cells,but stops being expressed when a cell has committed to the T-cell developmental pathway?

• A)CD2
• B)CD3
• C)CD25
• D)CD34
• E)MHC class II.

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Definitions:

Expected Frequency

The theoretical number of times an outcome is anticipated to occur in a statistical experiment based on the total number of observations and the probabilities of outcomes.

Uniformly Distributed

Describes a distribution where all outcomes are equally likely to occur.

Capital Punishment

A legal penalty where a person is sentenced to death by the state as punishment for a crime.

Poisson Distribution

A discrete probability distribution expressing the probability of a given number of events occurring in a fixed interval of time or space, assuming that these events occur with a known constant mean rate and independently of the time since the last event.