Fig 1: Cytokine analyses through FTIR. The regions at 978–956 cm−1 and 1061–1044 cm−1 are associated with IFN-γ (A), the regions at 1243–1217 cm−1 and 1409–1399 cm−1 are related to TNF-α (B) and IL-1 β (C), respectively, and the regions at 1393–1381 cm−1 and 1436–1428 cm−1 are linked to IL-6 (D) and IL-10 (E).