MKI67 and transitional cell carcinoma: Furthermore, proliferating urothelial cell carcinoma (UCC) cells had elevated MARS levels compared with their corresponding adjacent noncancerous cells (Fig 1P and Appendix Fig S1), and the proliferation marker Ki67 (Scholzen & Gerdes, 2000) was co‐over‐expressed with MARS in hepatocellular carcinoma (HCC) cells (Fig 1Q).