http://www.naturalnews.com/032988_sulforaphane_cancer_cells.html
"It is well documented that sulforaphane can target cancer cells through multiple chemopreventive mechanisms, said the authors, led by Dr. Emilo Ho, associate professor at the Linus Pauling Institute at Oregon State University". "Here we show for the first time that sulforaphane selectively targets benign hyperplasia cells and cancerous prostrate cells while leaving the normal prostrate cells unaffected," they added. The above 2 quotes from http://www.nutraingredients.com/Research/Broccoli-extract-can-target-cancer-cells-Study [note: specific experiment(s) done on animals. Might be applicable to humans, or not.] Sulforaphane is available as a supplement.