Chapter 683 Breakthrough

Chapter 683 Breakthrough

"The clothes are back."

Wang Chuanxing and Shen Yaowei returned together holding several large boxes of evidence. Wang Chuanxing put the objects into the cabinet and said, "The conditions of Zhengguang Bureau are really good. The evidence room is better than our newly built office."

"It can't be compared with those in the capital. Moreover, they are just bigger, and the decoration is just like that. Furthermore, the evidence room has no equipment. It's just a matter of ordering cabinets and buying a few computers." Huang Qiangmin was sitting in front of him. He curled his lips.

The capital's infrastructure cannot be compared to that of a small county town. Regardless of the high housing prices in the capital, when various departments build public facilities, it is still easy to achieve ambitious goals. A unit like the Zhengguang Bureau has a normal annual budget of more than 2 billion, so it is a good idea to root out those whose legs are thicker than their waists.

Wang Chuanxing was seconded to Ningtai County from the provincial capital. He was not that afraid of Huang Qiangmin. He smiled and said: "The evidence room has constant temperature and humidity. If I were to become an evidence, I would live like this." ”

"If you become an evidence, you will also go to the ice coffin of the anatomy center in the capital." Shen Yaowei was very sensible, and smiled at Huang Qiangmin and said: "The advantage of the capital is that the evidence is well preserved. I guess Captain Jiang can Mentioned a lot of pollen.”

When he said this, several people looked at Jiang Yuan who was sitting in front of the experimental table.

There is a microscope on the experimental table, and then there is a plate of tweezers and the like. It's possible to find someone to help with this job, but the case is serious and the most favorable evidence at present is the pollen on the clothes. Jiang Yuan is too lazy to do the work of picking up pollen for the first time.

To be honest, teaching a forensic doctor who has never done similar work, and then watching and doing it for a while, answering some questions and solving some small episodes in the experiment, is probably more tiring than doing it himself.

"You don't know what you can find yet. You will know when you see it. Bureau Huang, please rest. This is not a job that can be done in one day." Jiang Yuan spread out various utensils and took out the first item from the evidence bag. A stench wafted out of the clothes after several years, and it was stronger than usual, like farts that had been covered for a long time, like gas but not air, solid but not solid, soft and hard...

Huang Qiangmin's breath was confused for a few seconds, and he put on the mask in a daze, and then said: "I'll sit with you for a while, I have nothing to do now. I'll check my phone, and then we'll find a delicious restaurant. In the evening Go eat something good with public funds.”

When he said this, Wang Chuanxing and Shen Yaowei looked at each other and said hurriedly: "We will stay too. Although we can't help much, let's listen to Captain Jiang and Political Commissar Huang's greetings."

Huang Qiangmin smiled and took out his mobile phone: "By the way, let me show you the newly built detention center of our bureau. We are still working on the underground pipe network. Look at the construction standards, which means that this video cannot be made public, otherwise the prison will be broken. I'll cry all my tears."

Jiang Yuan had seen it before, couldn't help but smile, and then focused on the microscope.

As he said just now, you won't know what you can see until you see the evidence.

Rain, various types of detergents, friction, time factors and environmental factors may cause some pollen to lose its adhesion or disappear completely.

However, overall, pollen is still a very strong evidence. It's not like blood or hair, which can't be made into acid or alkali. Pollen has survived the mass extinction of life over the centuries. Volcanic ash, deep wells frozen, floods and beasts, beauties and stockings, hairy parasites, naked microorganisms, and nuclear radiation from across the ocean are all nothing in the eyes of pollen.

Under the microscope, a lot of pollen looks like a fortress, with long and tough thorns, thick muscles, and densely packed fine mesh. If you magnify it tens of thousands of times, it looks like a space fortress with a sense of future technology. No matter how you look at it, you look like you're not easy to mess with.

If cartoonists get stuck, search for a few pollen illustrations and revise them, which will be much more powerful than making up Battlestar. The pollen pattern that looks a bit yellow can be drawn to the inside.

"Compositae pollen." Jiang Yuan shook his neck and started recording in his notebook.

There wasn't much pollen on the clothes, so Jiang Yuan picked out the obvious ones first.

Huang Qiangmin, who was still checking his cell phone next to him, immediately sat over and asked, "Chrysanthemum?"

"Asteraceae is not a chrysanthemum." Jiang Yuan continued to look at the microscope. While looking, he said subconsciously: "If we classify it according to pollen, there are three types of pollen in the Asteraceae family, sunflower type, Senecio type, and spring type. It’s a chrysanthemum type. This one should be a sunflower type.”

"That means there were sunflowers at the crime scene?"

"It's not that simple. Because there are many kinds of sunflower-type pollen, including the sunflower family, the adenium family, the aster family, the heliotrope family, and the marigold family. In addition, the inula family and the Seneca family also have this type of pollen. Various types of pollen..." Jiang Yuan was talking about tribes, and there are about 30 genera below, which are very complicated.

Most people who engage in forensic botany basically give up after hearing this.

Huang Qiangmin was also confused after hearing this, and frowned: "Just tell me if there are any sunflowers at the scene."

"Yes." What Jiang Yuan found was indeed a pollen from the genus Helianthus.

This judgment alone can drive normal botanists crazy. Sunflower-type pollen has similarities and differences, so it is not easy to judge. In fact, it should be very difficult.

Jiang Yuan gave a conclusion without consulting any information, which was equivalent to casting a spell instantly without a magic book. Unfortunately, there were only Muggles at the scene, and no one understood it.

"When the third victim was found, there was no sunflower at the scene. So, we are approaching the first scene?" Wang Chuanxing turned over and was already emotional.

"It's still a long way from locating it." Jiang Yuan looked up at Wang Chuanxing and began to pinch another pollen.

Wang Chuanxing shook his head: "Even so, it's already a breakthrough. Considering other aspects, such as the victim's mobile phone location on the day, the testimony of eyewitnesses, etc., maybe we can find the first scene."

Indeed, doing forensic botany in the city is not as fun as in the wilderness.

But from another perspective, the source of pollen in the city is also very single. Even the pollen of common plants such as sunflowers is not always available.

Jiang Yuan has the skills to rely on, so he naturally won't use such a crude method. Moreover, the pollen on the clothes has already been tested, and this time it must be tested completely. Otherwise, if the case is not solved successfully in the future, the second test will be the second test, and the accuracy will be limited, and a lot of information may be lost.

Whether the case is solved or not is another matter, the text work must be done well. This is also one of the foundations for Jiang Yuan to rely on reading the papers to solve the case.

Soon, Jiang Yuan scanned the pollen of willows and pine trees, and then camellia and clematis...

However, the most is sunflower pollen.

When Jiang Yuan picked up some doubts about his life, he suddenly looked up and said, "Sunflowers are insect-pollinated."

"Huh?" Huang Qiangmin and others present did not react.

"The wind-pollinated pollen has a long transmission distance, while the insect-pollinated pollen has a short transmission distance. If it is a sunflower field, there will basically be beehives next to it." Jiang Yuan said while making notes. When the place is found, it must be in line with the one-to-one match to be useful.

In general, the requirements of forensic botany are still very strict, but when used for investigation, it is also a bit arrogant.

Although the murderer tidied up the crime scene like a professional, how should he deal with forensic botany?

Friendly recommendation: "It's not necessary to be too normal to be a doctor"