Refer to the Graph Showing a Person's Immune Response, First

question 83

Multiple Choice

Refer to the graph showing a person's immune response, first to a vaccination, and later to exposure to the pathogen that the vaccine targeted.Time is represented on the x-axis, but the scale is different for each subdivision. If the graph shown represents a time course following a person's vaccination against measles, which is an accurate estimate of times labeled A-D?

• A) A must be months; C must be weeks.
• B) A must be weeks; B could be days to years.
• C) A must be days; D must be years.
• D) B must be months; D must be years.
• E) C must be months; D must be years.

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