In oral squamous cell carcinoma Cal27‐ and HeLa‐derived mouse xenografts, intratumor injection of thymol (4.3 mmol/L) reduced the tumor volume with decreasing cell proliferation and inducing apoptosis as observed by Ki-67 staining and TUNEL assays, respectively (De La Chapa et al., 2018). Here, MKI67 is linked to neoplasm.