Jiang Yuan looked at the information and drank green tea. After a cup of tea was lost, Wen Youchuan, a forensic doctor from Jianjiang City, came with two suitcases.

Wen Youchuan has worked with Jiang Yuan several times and is familiar with Jiang Yuan. When he arrived at the scene, he opened his suitcase while saying hello and started taking samples in batches.

Red, brown, brown, yellow, and green and black samples were repacked and placed on the tabletop.

While working, Wen Youchuan said, "We don't give me many instructions and ask me to cooperate and serve you well. My junior brother is now organizing information in the office. If you need it, please give it to Wuzhi. Don't tell me what I said..."

Jiang Yuan smiled and shook his head, and stood up and said, "Actually, I should go to Jianjiang City. Wuzhi is too anxious."

Under normal circumstances, Jiang Yuan should have gone to check the sample, but Wu Zhisu did not give this option at all.

Wen Youchuan smiled indifferently and said, "I finally encountered a case you are interested in. Wu Zhi naturally hopes to keep Jiangyuan's special case team in Jianjiang. I let it go. I don't know when it will be available next time. Wu Zhi told us last time that it is costly to join the Taihe working group, and he dislikes us for not doing well, and he dislikes the working group for not paying attention to Jianjiang's work."

Hiss...

Huang Qiangmin sucked green tea, and his lips and cup mouth made an outdated sound.

Wen Youchuan glanced at it and turned his head quickly, his heartbeat and said, "Where do we start?"

"Does there be bone marrow specimens?" Jiang Yuan said that the bone marrow contains diatoms.

According to ordinary people's ideas, they may think that the specimens containing diatoms are specimens in the lungs. Naturally, if the deceased drowns in the water body, the lung tissue is the first organ to deposit diatoms. But to say that the gold standard for drowning diagnosis is bone marrow!

Because the bone marrow is highly specific and can only be transmitted through the circulation system during the lifetime, diatoms are found in the bone marrow and it is possible to confirm that they were drowned, which ruled out the possibility of abandoning the corpse after death.

Of course, it does not mean that there must be diatoms in the bone marrow of a drowned body, but if the forensic doctor has doubts about the cause of death, it is a better choice to intercept the bone marrow of the long bone. If so.

Similarly, if the forensic doctor has no need, he may not take bone marrow specimens.

Wen Youchuan nodded and said, "There is only one case that was taken and obtained the bone marrow specimen. The 1011 corpse case. The case 8 years ago."

"You're in charge?" Jiang Yuan saw him proficiently finding the specimens and files.

"Yes. I did it with another forensic doctor." Wen Youchuan said: "The body is highly decayed. When it was discovered, the muscle tissue was already mud-shaped and the organs melted. During the autopsy, it was found that there were blunt weapon injuries on the head and the hand bones were also fractured. Then the case was filed."

Jiang Yuan nodded slowly, probably because the self-fusion of the organs was the reason why they made bone marrow diatoms.

Extraction of bone marrow is relatively troublesome. Human leg bones are very hard, and it is difficult to use an electric bone saw, especially for corrupt corpses, which are slippery and greasy, and fixing is a big challenge. The whole process is very labor-consuming. In general cases, forensic doctors do not like to take this specimen without any need. The most troublesome thing is that extracting bone marrow requires sterile operation, otherwise the diatoms outside contaminate the bone marrow, and this operation will be in vain.

"Then compare." Jiang Yuan said, holding the bone marrow specimen, and looking under the microscope.

Wen Youchuan began to prepare other specimens in the same case, as well as specimens in other cases.

He is the forensic doctor, so he naturally understands what Jiang Yuan’s operation means.

The application of diatom database is part of forensic botany, and the analysis and identification schemes are similar. In general, the diatom maps of water systems such as rivers have been stable for a long time. Diatoms at different locations will have a variety of different varieties and forms, which makes the diatom maps at any location unique.

Jiang Yuan is now comparing the diatoms in the specimen. As long as he wins the comparison, he is likely to find a water drop or a corpse throwing point.

This is a big breakthrough for drowning cases.

Here, bone marrow specimens are 100% water dropping points. Other visceral specimens can also bring similar value, such as liver, kidney, spleen and heart, which may cause diatoms due to systemic circulation. The lung specimens are weaker.

However, finding the waterfall point is still a long way to go before solving the case. Wen Youchuan recalled the drowning case he had done before and secretly carried out psychological construction for himself.

This type of case is always a long time and exhausting thing, but a policeman has no choice...

Wen Youchuan thought while drinking tea smoothly.

Not long after, Jiang Yuan raised his head, waved to ask for the file, and began to read it.

Wen Youchuan's tea suddenly stopped fragrant, so he leaned closer and asked in a low voice: "Have you won the competition?"

"I won the competition." Jiang Yuan nodded.

"Hey, have you been hit?" Wen Youchuan's imagination of little cheers and little celebrations, and he was a little confused about how to speak for a while.

"If this case is in line, then let's do this case first. 1011 floating corpse case." Jiang Yuan pointed with his hand at the final conclusion of the forensic report: Intact diatoms were detected from the bone marrow on the right long bone, which was inconsistent with the water sample.

"The conditions are quite suitable, so there is no need to pick them anymore." Jiang Yuan explained, "The diatoms were detected in the bone marrow specimen, which means that they were drowned. They are inconsistent with the water samples, which means that the place where the body was found was not the place where the deceased fell into the water. Of course, we now know the specific place where the water fell into the water..."

While Jiang Yuan was speaking, Qiao Shengli next to him printed out the address in the database and handed it to him.

"The corpse falls into the water is located in Fanjia Village, upstream of Ningtai County. Check if there are any murders or missing people here." Jiang Yuan gave orders to Wang Chuanxing and others, then turned to look at Wen Youchuan and said, "Is the corpse still there?"

"Only the bones were left. The corpse was rotten too seriously and could not be kept." Wen Youchuan quickly explained.

For a murder case that has not been solved, it is best to stay the body involved in the case. Even if the second autopsy has poor results, it is better than not.

However, it is indeed difficult to keep high-rotten corpses. When the organs melt, they are not only the heart, liver, spleen and kidneys. The gastrointestinal tract is also blurred, and the things inside will overflow - it is not important. At this time, the smell of the corpses is extremely complicated, and it doesn’t affect more or less.

"Let's take a look at the electronic version of the photo." Jiang Yuan called Wang Chuanxing over again and specially asked for photos of the skull and hand bones.

"Political Commissar Huang, Wuzhi is here." The subordinate came to report.

Huang Qiangmin stood up and looked at Jiang Yuan.

Jiang Yuan naturally took out the wearing of Shuangse Guan Erye from his arms and touched him lightly.

Huang Qiangmin was very determined.

According to the code agreed by the two, this shows that Jiang Yuan is confident of dealing with this case, which is about the difficulty of paying homage to Mr. Guan once.

Huang Qiangmin sorted out his clothes and went out to greet him.

Wu Zhi walked into the door in a blatant manner with a smile on his face.
Chapter completed!