The Two- Signal Activation Process for T Cells Includes

question 43

Multiple Choice

The two- signal activation process for T cells includes

• A) interaction of the T- cell receptor with the MHC- antigen complex on the APC AND binding between co- stimulatory proteins on the T cell and APC surfaces.
• B) the presence of antibodies AND binding between co- stimulatory proteins on the T cell and APC surfaces.
• C) the presence of a superantigen and the presence of appropriate antibodies.
• D) interaction of the T- cell receptor with the MHC- antigen complex on the APC AND the presence of a superantigen.
• E) the presence of a superantigen AND binding between co- stimulatory proteins on the T cell and APC surfaces.

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Definitions:

Expected Frequencies

The anticipated count of occurrences in each category of a variable, calculated under a specific hypothesis in a chi-square test.

Shape

Describes the geometric or visual characteristics of an object or distribution, such as symmetry, skewness, or roundness.

Multinomial Experiment

An experiment consisting of a fixed number of trials where each trial has multiple possible outcomes.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists within a set of given observations or parameters.