Thanks for thr pings, but I won't hold my breath. IIRC, urokinase was the first enzyme they used for hepling to dissolve blood clots. I believe it's still be used occasionally. Then came streptokinase for clot dissolving, developed from some kind of streptococcal bacterium, but it can only be used once because of subsequent allergic reactions, IIRC. Since I started training they've been using t-PA, tissue-plasminogen activator. Notice that similar ending to urokinase-plasminogen activator.
The spread of cancer was blocked in six out of seven mice bred to not have the enzyme urokinase plasminogen activator, and the mice did not suffer without it.
The number of different kinds of cancer are too many too count. They didn't say what kind of cancer. These mice are called knock out mice because they don't have a particular gene. I don't want too sound pessimistic, but the subject is very complicated, and there's so much basic medical science they don't know yet.