Yan Shan solemnly recommends to everyone the masterpiece of the rookie editor and the same brother (in no particular order)

The author of "The God of War of the Online Game" is gloomy; The author of "I Want to Subdue the Devil" is Youming; The author of "The Merry Boy of Difu" is not K; The author of "Flowers Stealing Hearts" does not turn around

Recommend the beautiful writer Liao Zhai's masterpiece "Vitality Change", a wonderful book that cannot be missed.

Recommend the bad masterpiece "Butterfly Sea" by the Blue Wolf Emperor, everything you want to see is in it.

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Seeing Yang Zi rushing in, Lao Zhang stopped his hand and Qiqi were carefully packing up the instruments and equipment in the room, and played a cold humor with Yang Zi and said, "This pair of water is complete enough, and it hasn't fallen." ”

Yang Zi nodded to Lao Zhang even if he said hello, at this moment he didn't have the heart to be poor with Lao Zhang, he entered the door and went directly to the dissecting table, and at a glance saw that there were various human internal organs stacked on it, it turned out that Lao Zhang knew that Yang Zi would definitely pick it up one by one and observe it with his own eyes, so he was not in a hurry to put it in the evidence bag.

After putting on disposable medical gloves, Yang Zi grabbed those things the same and carefully observed them in front of his eyes, each organ was very complete, there were no traces of scratches, and the only thing that people could check was the knife edge where each organ was cut.

This murderer is really fucking perverted, and he took off every organ in the deceased's body, although the incision looks very rough, no need to say it, Yang Zi knows that this shows that the murderer is not a professional.

Although these internal organs have been cooked at high temperatures, resulting in a great shrinkage, only from the appearance of the preservation of such intact, but it is not the work of a professional, it probably only indicates that the murderer once knew the relevant knowledge of the human body.

Judging from the roughness of the incision, the murderer should have committed the crime by accident, without careful preparation, and the dividing tool used by the murderer should be an ordinary kitchen knife, otherwise it would not have caused such a shape.

Under what circumstances did the murderer kill the deceased? And by what method did he kill the deceased? Where was the first scene of the killing? It is likely to be at the house of the deceased or the murderer.

What methods and tools did the murderer use when he dismembered the body? What about the other corpses? Was it also cooked and thrown elsewhere in the city?

And why did the murderer not make much effort to decompose this pile of internal organs since he had already chosen to break up the corpse? You know, it's much riskier to discard it in its entirety than to discard it after it's broken down.

In addition, judging from the photos taken by Qiqi, when these internal organs were discarded in the septic tank of the public toilet, no items that could be used to package them were found, that is, the murderer probably took an extra step to remove the container carrying these organs when he threw them.

Therefore, from this point of view, it can be inferred that the murderer must have a car, regardless of whether the car belongs to the public or private, only in this way can he (she) act quickly and leave the scene of the discarding safely with the car.

There were too many questions piled up in his mind, and he needed to answer them one by one, and the only thing he had in his hands now was this pile of human organs that had been severely dehydrated and deformed because they had been cooked.

Lao Zhang saw Yang Zi holding a dead man's kidney and pondering, so he walked up to him, shrugged his shoulders, shook his head and said to him expressionlessly: "Now I can't find anything, I can only tell you that this really belongs to human beings, and it does belong to the same person." ”

He paused and then added, "But my suggestion is to track down the missing people, which is much better than you taking your brothers and looking for a needle in a haystack." ”

"Looking at this situation, after the corpse was chopped up, it must have been boiled for a long time, and the internal organs are generally not easy to cook through, judging from the degree of cooking to rot, it may be cooked in a pressure cooker."

"In addition, when the deceased was killed, he must have had just eaten dinner, which can be seen from the contents of his stomach, most of which have not yet been digested, and the food is still in its original state."

"The deceased was a male, aged about 40 to 50. Truth be told, there's not much useful to get out of this pile of boiled. After speaking, Lao Zhang shook his head again.

Yang Zi nodded silently while listening to Lao Zhang's analysis, knowing that it was not easy for Lao Zhang to detect these things, and most of them could only be judged by his years of experience in forensics.

It's a pity that he and his brothers rely on this bunch of human organs that may have been destroyed even by NDA, and if they want to successfully solve this case, it seems that it is a little more difficult than Tang Seng and his apprentices to learn scriptures from the West.

Now the only way to do this is to keep the things in good place, and then pay a wide attention throughout S City to see if the murderer has discarded other other pieces belonging to the same corpse again.

And, as Lao Zhang said, pay close attention to the missing male persons between the ages of 40 and 50 who have been reported in the public security system during this time, and now the focus can only be placed here.

On October 16, the investigation of the city's missing persons has been almost screened, but unfortunately most of the missing people are elderly or children, and there are very few who meet the conditions provided by Lao Zhang.

Except for the internal organs of these people found by Ding Min on the 15th, no one reported that the broken bodies were found.

The case seems to have reached a stalemate, and there is no breakthrough to be found, and the brothers in the team are not in a hurry, they have long been used to it, this kind of calm before the storm is coming, but now there is no further evidence, and it is impossible to break through, and after a while, if you have a little more clues, the task will be tense.

Yang Zi still soaked in Lao Zhang's place every day, he was worried that the internal organs of people who had been boiled like this would not be able to trace information such as DNA, so he came over to harass Lao Zhang if he had nothing to do.

However, his worries were unnecessary, and Lao Zhang told him very clearly that modern DNA testing technology has been perfected, whether it is cooked, incinerated or soaked in medicine, as long as it is not cremated to ashes, it can be tested.

Lao Zhang also said that for undamaged human tissues, ordinary STR and PCR technology methods are generally used to detect STR gene loci, primers from multiple STR loci are added to the same reaction system, DNTP and Mg2+ concentrations are fixed, the cycle temperature and cycle times are constant, and the primer concentrations are adjusted for synchronous amplification.

In addition, the PCR method mainly focuses on the bloodstains, hair, nails, teeth, muscle tissue or organs, cigarette butts and other samples left at the murder scene.

Regardless of the carrier (knives, clothing, paper, wood, soil, concrete, rocks, leaves, etc.) that remains on the physical evidence at the scene of a homicide, PCR can be used to detect the samples as long as they are carefully and carefully collected.

The probability of the coincidence of physical evidence in the ethnic population is calculated through detection, and if it is achieved, the scientific and accurate performance can be identified, and even mixed blood stains (or mixed sperm spots) are no longer an insurmountable obstacle.

As for the detection of cooked corpse parts (skin, muscles, organs and other tissues), the amplification of the target fragment is affected by the PCR amplification of the target fragment because the human DNA is particularly sensitive to high temperature, and DAN fragmentation is prone to occur after high temperature treatment.

The DNA of the submitted material was extracted using a Chelex100, amplified using a Power Plex 16 system kit, and 16 loci (including Amelogenin) were detected using the ABI310 DNA analyzer.

The results of analysis and detection showed that the DNA of the cooked corpse tissue could not only be amplified, but also completely read the allele polymorphisms of each STR gene locus, indicating that the ordinary high temperature (about 100 degrees) had little effect on the human DNA fragment and could still be detected.

Seeing that Yang Zi was very attentive to what he heard, Lao Zhang smiled with relief and patted him on the shoulder: "Don't worry, our bureau now has the technical ability to extract the DNA information you need." ”

He paused for a long time and then said: "Hehe, I haven't got these things yet, mainly because there is no other information to compare, and it costs a lot to operate alone, so I want to wait for something else to compare and then test it together." ”

Hearing him say this, Yang Zi really gained knowledge, but in order to ensure that nothing went wrong, he still asked Lao Zhang again: "Are you sure?" If the information carried by the DNA cannot be extracted, then the case will not be solved. ”

This time, Lao Zhang was anxious, and looked at him with widened eyes: "I said that you comrade, why don't you trust people?" I said okay, if it doesn't work, I'll take care of it. ”

"Alas, don't don't, Elder Zhang, I'm wrong, right? If you say yes, then it will be okay, then I can rest assured! I'll go to the team first, you get busy first. Seeing that Lao Zhang was in a hurry, Yang Zi hurriedly begged for mercy, really afraid that this lovely old man would be angry, and flashed out of the forensic room while talking.

With Lao Zhang's words, Yang Zi is indeed much more relieved, you must know that the pile of miscellaneous scraps that have been fished back, if it really can't detect DNA, it is really not much better than a pile of waste.

But it's no wonder that he is worried, many sources say that after high temperatures, the DNA in the human body, that is, deoxyribonucleic acid, will be denatured after high temperatures, and even destroyed, but now it seems that this theory has probably been overturned by new science.

Now that I don't have to worry about the DNA problem that can best explain the truth, this case will come to light sooner or later with the efforts of myself and my brothers.

Thinking of this, Yang Zi became confident again, and quickly returned to his office, his head was full of questions that needed to be verified, although he still did not grasp more substantive things at this time, but as long as he found other parts of the deceased's body or the living items he used, as long as the identity of the deceased could be confirmed, all the problems would be solved.

At this time, the rain outside has stopped, and unconsciously, the day has passed, breathing the fresh air after the rain, in the windowsill of a house in S City, there is a girl lying on the windowsill again and peeking at the opposite person.

Under the table at her hand, there was a plastic bag full of rags she had picked up this morning, while the man across from her was on his way to work.

She didn't know what was thrown away at that time, but with her imagination, she picked up everything that she found that might have been recovered, and among them, there was the piece of Jade Guanyin that was casually thrown away by the man opposite.