In line with our understanding of a more slowly developing adaptive immune response in reptiles, transcriptions of genes related to T-cell responses to viral infection and mediation of IFN-γ-induced cell death (e.g., DAP, DCAF5) continue to increase between the third (7–9 dpi) and fourth stage of infection (11–21 dpi) (Fig 9B). The gene discussed is DAP; the disease is infection.