Interestingly, in areas of the lesion where aspects of vascular and tumoral cell proliferation abounded, dividing pericytes still distinctly labelled by clone 2161F9 were seen, together with proliferating tumour cells that, during mitosis, accumulate 2164H5-reactive NG2/CSPG4 within the cytoplasm and close to the dividing chromosome (Figure 4D-F). This evidence concerns the gene CSPG4 and neoplasm.