 Look, Professor, I'm going to make a deal with you. A deal? Yeah. I'll let you keep on living if you'll give me a shot of that serum. But that's impossible. It hasn't been perfected yet. What do you mean it hasn't been perfected? It saved the dog, didn't it? Yes, of course, but I'm still in the experimental stage. I don't know how long the serum is effective or the condition in which it leaves the body after it has worn off. You're wasting time, Professor. I'd hate to have to persuade you. I see.