C397 Reversing the Future.

"No, no, no. Mr. Bob, we don't have any mutated human gene suppressing serum in our hospital!" The attending physician said helplessly. However, at this moment, he lowered his voice and said, "But I can help you contact the black market. They still have some stock!"

"Black market? How much is the serum sold for?" Bob asked anxiously.

The doctor stretched out five fingers and said