Immunohistochemical analysis of proliferating cell density changes.

<p>A, The graph shows the changes of mean proliferating cell density of the control and treated tumors post treatment. There was significant difference in proliferating cell density between control and treatment groups on days 2, 4 and 6 (* = <i>P</i><0.001). B, Representative KI67-stained sections of the control (C) and treated (T) tumors on days 0, 2, 4 and 6. Brown areas reflect positive staining of proliferating tumor cell. Scale bars: 50 µm.