Neutralization titers reveal the structure of polyclonal antibody responses.

Neutralization titers can quantitatively reveal the structure of polyclonal antibody responses, distinguishing between collective and dominant antibody contributions with Gumbel distribution models.

• Why it matters: Understanding the composition of antibody responses is crucial for assessing immunity but is difficult to measure directly. Accurate models can improve vaccine design and immune monitoring.
• What they did: The study analyzes influenza cohort titers using statistical models, comparing distributions across individuals and proposing an equilibrium binding model to interpret the data.
• The result: Findings show that titers follow Gumbel distributions before immune challenges, enabling predictions of response structure and offering a framework applicable to other pathogens' immune responses.