TRPM8 knockdown resulted in upregulated chemokine expression in mice after infection. (A–D) The gene expression of chemokine Ccl2, Ccl3, Cxcl1, Cxcl2 in cornea homogenates of WT mice and TRPM8−/− mice three days after HSV-1 infection or in mock-infected mice. Results are from one of three independent experiments (n = 3 mice per group). *P < 0.05, **P < 0.01. (E, F) The gene expression of cytokine IL-1β and IL-6 in cornea homogenates of WT mice and TRPM8−/− mice three days after HSV-1 infection or in mock-infected mice. Data from one of three independent experiments are the mean ± SEM (n = 3 mice per group). *P < 0.05. ***P < 0.001.