Which of the Following Statements About Type IV Reactions Is

question 5

Multiple Choice

Which of the following statements about type IV reactions is FALSE?

• A) Reactions are primarily due to T cell proliferation.
• B) Allergic contact dermatitis is an example.
• C) Reactions are not apparent for a day or more.
• D) Cytokines initiate tissue damage.
• E) Hemolytic disease of the newborn is an example.

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Definitions:

Wilcoxon Signed-Rank Test

A statistical test used for comparing two related samples to determine if their population means rank differ.

Dependent Samples

Two or more groups of observations where the individuals or items in one group are related or matched to those in the other groups.

T-Test

A statistical test used to compare the means of two groups or to compare a sample mean with a known value when the sample size is small and the population variance is unknown.

Sign Test

A non-parametric test used to determine if there is a significant difference between paired observations, based on the direction of differences rather than the size.