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Specific anti-NDV antibody levels in Cory's shearwater chicks for four treatment groups: chicks from control females, non-vaccinated (blue) and vaccinated when 20 days old (green); chicks from vaccinated females, non-vaccinated (red) and vaccinated when 20 days old (orange). GAMM are used to control for individual effect and nonlinear dynamics. Means and 95% CI of the slopes of the models are presented.
