this classification made it possible to identify a group of tumours of which none formed metastases ( diploid tumours with 5 alpha-reductase activity greater than 20 pmol/mg protein/30 min and with less than 10 % of the cells undergoing mitosis ) and a second group of which 78 % had metastasised at the time of presentation ( diploid tumours with 5 alpha-reductase activity less than 10 pmol/mg protein/30 min and with more than 15 % of the cells undergoing mitosis ) .
C0007634
cells
C0026255
mitosis