Immunization with the Childhood DPT (Diphtheria, Pertussis, and Tetanus) Vaccine

question 12

Multiple Choice

Immunization with the childhood DPT (diphtheria, pertussis, and tetanus) vaccine protects against subsequent exposure to tetanus by

• A) stopping isotype switching of B cells from IgM to IgA.
• B) preloading antigen-presenting cells.
• C) stimulating quick inflammation upon future exposure.
• D) producing life-spanning antitetanus IgE antibodies.
• E) generating tetanus-specific memory B cells.

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Definitions:

Randomized Block Design

An experimental design that groups subjects into blocks based on certain characteristics before randomly assigning treatments, to reduce the variability within treatment conditions.

Degrees of Freedom

The number of independent values in a calculation that are free to vary when estimating statistical parameters.

Randomized Block Design

An experimental design in which subjects are grouped into blocks based on certain characteristics before being randomly assigned to different treatments.

Sum of Squares for Blocks

A measure used in analysis of variance to quantify the variability among different blocks or groups in an experiment.