What Is the Underlying Molecular Cause of Crohn's Disease

question 20

Multiple Choice

What is the underlying molecular cause of Crohn's disease?

• A) B cells are mutated and do not release antibodies.
• B) Receptor proteins are mutated and do not detect bacteria properly.
• C) Helper T cells are inactivated.
• D) Mucus is not released from epithelial tissues.
• E) More than one of these in combination.

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Definitions:

Nonresponse Bias

A bias that occurs in survey statistics when individuals who do not respond differ significantly from those who do, affecting the validity of the results.

Response Bias

A type of bias that occurs when respondents to a survey or study give inaccurate answers, often due to the wording of questions or social desirability.

Undercoverage

A bias in statistical sampling where some members of the intended population are inadequately represented in the sample.

Nonresponse Bias

Bias in survey or study results that occurs when respondents differ significantly from nonrespondents, affecting the representativeness of data.