Fig. 2.
Expression of Ki-67. a from pTNM stage I gastric adenocarcinoma; b from pTNM stage II gastric adenocarcinoma; c ++ from pTNM stage I gastric adenocarcinoma; d +++ from pTNM stage III gastric adenocarcinoma. For Ki-67, − means very low proliferation activity with proportion of Ki-67-positive cells < 25%; + means low proliferation activity with proportion of Ki-67-positive cells 25–50%; ++ means moderate proliferation activity with proportion of Ki-67-positive cells 50–75%; +++ means high proliferation activity with proportion of Ki-67-positive cells > 75%