The KCs treated with mitomycin C resulted in similar values as TGF-β1-treated KCs (G0/G1: 65.3 ± 15.2%, S phase: 29.8 ± 14.7%, and G2/M: 5.3 ± 1.3%), indicating that TGF-β1 induces growth arrest in the KCs (Figure 5). The gene discussed is TGFB1; the disease is dry eye syndrome.