Immunohistochemical staining and cell proliferation.

<p>(<b>A</b>, top panel) haematoxylin and eosin staining showing leucocyte packed necrosis in U87MG tumours treated with NK+mAb9.2.27 and mAb9.2.27 monotherapy, (arrows), Magnification 200X; Scale bar 100 µm. Cellular dense tumours treated with NK cell monotherapy and haemorrhaging control, untreated tumours. (<b>A</b>, middle panel) Ki67 staining of proliferating tumour cells (<b>A</b>, bottom panel). Magnification 200X; scale bar 100 µm. Tunel stained apoptotic cells, Magnification 200X; Scale bar 100 µm. (<b>B</b>) Quantified Ki67 labelling index, data represents mean ±SEM of all animals treated. (<b>C</b>) Quantified Tunel labelling index, data represents mean ±SEM of all animals treated,*p<0.05; **p<0.001, ***p<0.0001. D Ratio of proliferation: apoptosis index.