Liu Pengcheng looked at the case file in this box again, and thought for a while: "Give me a copy of the case you said two years ago, and you can keep the rest." ”

"We don't have a photocopier, just a black-and-white printer, and many of the document computers don't have it. In this way, you can just take this case file with you, this case has not been filed, and these materials are not public-related materials, many of them are collected by myself. There was some hope in Liu Xin's eyes.

"As long as it is a citizen report, it is a public material," Liu Pengcheng was stubborn, "Take the document handover book, and I will sign it for you." ”

"Good!"

Leaving Liu Xin, Liu Pengcheng's mood was not calm.

Judging from the contacts during the day today, this office can be called capable of handling cases, that is, Zhao and Liu. And these two people, in the past six years, have never given up investigating the situation of this hospital, and even did not hesitate to pretend to be false and wronged. If it weren't for Liu Pengcheng's early investigation of the four courts that broke the balance, maybe this deadlock process would have lasted for a while.

On December 22 last year, Zeng Chunyu went to deliver medicinal materials and saw that the relationship between the police station and the hospital was good, so it should be that the police station was acting.

Of course, judging from the current situation, it is difficult for this kind of persistence to have any new results. This can't be blamed on Liu Xin and Zhao Suo, because in a place like the police station, there are only so few resources.

Looking forward from Zeng Chunyu's line, there is no harvest for the time being. The amount of Chinese medicinal materials such as echinacea and licorice that Tan Song bought from Zeng Chunyu is not enough at all, unlike the amount used by a serious pharmaceutical factory, even if it is a small workshop, the amount should be larger. Moreover, the products that came out here never seemed to have appeared in the visitor hall on the first floor, and they may have been filled with products such as Tianxian liquid and given to the four courtyards.

Liu Pengcheng took the case file in his hand and recalled the previous investigation. When Liu Pengcheng was following Li Xian on Wenwan Street before, he found that Li Xian went to meet a person named Liu Yong.

Liu Yong was a figure with a head and a face near the antique street, who once needed a kidney and was later transplanted in a big hospital. And the kidney source for this transplant operation was actually provided by the terminal cancer patients in the four hospitals. The procedures are legal, the kidney source is healthy, and the hospital is professional, and Liu Yong survived.

So where does this kidney come from?

Liu Pengcheng looked at the case file in his hand, his fists clenched and clenched, the man who disappeared two years ago matched the time of Liu Yong's kidney transplant in terms of time. In other words, there is a possibility that Liu Yong used this person's kidney.

Regarding this issue, Liu Pengcheng was unprofessional, he drove the car, returned to the Fourth Courtyard in one go, found Dr. Zhao and Xiao Gu, and told him about it.

"Is there any kidney that Liu Yong removed at that time? If you have, you don't have to look for him, you can get his DNA." Liu Pengcheng was a little emotionally fluctuating.

"Kidney transplantation is not a kidney removal," although Dr. Zhao was angry, he still told Liu Pengcheng seriously, "Kidney transplantation is to add a kidney to the body and add it to this position. ”

As he spoke, Dr. Zhao pointed to the vicinity of his big crotch.

"Then how can it be determined that the kidney in Liu Yong's body is related to the family of this missing person? We can't tie up Liu Yong, anesthetize him, do surgery, and then take a sample from the kidney, it's not legal. Liu Pengcheng had a headache, this was just a guess, and it was impossible to do so in order to guess.

"It doesn't have to be that way," Dr. Zhao explains, "the transplanted organ does detect the DNA of the person who provided the organ, but this DNA is not only present in the original organ. The transplanted kidney will also be metabolized, and there will also be cell death, and the dead cells will also enter the bloodstream, the professional term is donor-derived cell-free DNA, commonly known as free DNA. This thing can be detected in blood and urine, but there are DNases in the blood circulation of the human body, which can degrade macromolecular DNA, so it is not easy to find complete free DNA. This DNA fragment can also be used for analysis, but the more complete the better, and the blood is definitely better than the urine. ”

"I see, I'll go find someone to get some blood for him!" Liu Pengcheng came up with a lot of ways in an instant.

"In his case, he has to go to the hospital regularly for check-ups, and now some hospitals have their own programs to detect cell-free DNA. From the situation of free DNA, you can reverse analyze the current damage of the graft, and it is better for you to find a way from here. Dr. Zhao felt that he was indeed a little tired.

This case is much more of a headache than the case of theft from his home!

"I understand," Liu Pengcheng took a deep breath and continued, "Xiao Gu, you can notify the public security here, and let Dr. Zhao go back to rest early." The follow-up work is much simpler, I will report to Director Dai, after the report, we will go to see Li Xian again, and know some things about Tan Song from his mouth, at least all of them will be detained tonight. ”

Before Xiao Gu could promise Liu Pengcheng, Liu Pengcheng's mobile phone rang, and it was Director Dai's.

"Director Dai, I just wanted to call you, what are you?" Liu Pengcheng asked.

"Li Xian attempted suicide and went to the hospital, I have to come and see," Director Dai said with a smile, "Li Xian has regained his composure and explained some things, the content is basically the same as your previous expectations, you can come and take a look." ”

"Recruited?" Liu Pengcheng was not a little surprised, thought for a few seconds, and left Xiao Gu here to arrange the things he had just arranged, and he went to the hospital alone. (End of chapter)