Primary vs. Secondary Immune Response Differences

Steps:

• Recall primary response involves first antigen exposure, activating naive B/T cells for slow IgM production and memory cell formation.
• Note secondary response occurs on re-exposure, with memory cells enabling faster, stronger IgG-dominated response.
• Identify key differences: lag time (longer in primary), peak antibody levels (higher in secondary), antibody type (IgM primary, IgG secondary), and duration (shorter primary).
• Match statements 1, 2, 3 to these differences, assuming they cover lag, magnitude, and isotype based on standard immunology.

Not enough information: Statements 1, 2, and 3 are not provided.

Final answer: Not enough information.