civil forensic

Chapter 647
early morning.

Jiang Yuan came to the forensic laboratory early, first made himself a cup of tea, then tidied up the table, and then started the day's work - looking at the microscope.

Several pieces of the bloody clothes as evidence have been cut out for Jiang Yuan to pick up pollen under the microscope.

Contrary to what many people imagine, criminal officers often do not aim to preserve their original form when confronted with evidence.Common things such as sheets and pillow covers at crime scenes, when testing blood or rice green fluid, they are roughly cut out, and then soaked in reagents for further testing.

In addition, paper that is contaminated with other substances is treated in a similar way.

Some people may feel uneasy about the destruction of this original state, but from another perspective, when many evidences are collected, the original state of the evidence will not be returned.

For bed sheets that have died, it is not necessarily necessary to pack the entire bed sheet, and it is even more unnecessary to pack all the four-piece suits on the bed. If it is a technician from the criminal department, the most normal way is to cut a piece back.

As for whether evidence will be missed because of this, it depends on the on-site ability of the investigators.Generally speaking, if there is any doubt, they will pack more things back, otherwise, just cut a piece and bring it back as evidence.

Of course, depending on the importance of the case, the packaged volume will be larger.

And for a small case like burglary and the value of the case is not high, it is impossible to pack a little more. Even if the evidence room does not say anything, the plaintiff is not happy that you packed a truckload of items in his house because of a case worth thousands of dollars. .

Jiang Yuan picked up the pollen one by one.

The size of the pollen varies greatly. The smallest pollen is only about 4 microns in length, and the largest pollen is 200 microns in diameter. In terms of shape, there are many species of pollen that are round and spiny, and some are abalone-shaped and triangular. ...

In general, if it is only LV1 forensic botany technology, it can easily distinguish the pollen, but technicians with insufficient levels will encounter many problems when it comes to judging the specific species.

As far as the case is concerned, LV1 level forensic botany can hardly provide direct clues, at most it can only check the evidence.Or, in the face of a single species of pollen, narrow down the scope.

For a forensic botanist at level LV2, the ability to distinguish should be greatly enhanced, but it also needs to constantly check the information to check.Needless to say, on such a time-consuming project, constant access to information means that the progress bar is likely to be stuck.

At LV3, most of the pollen does not need to consult information, at least not a lot of information. In this case, the practicality is greatly enhanced.

Jiang Yuan's current forensic botany has reached LV4, and many pollen species can be recognized at a glance.Moreover, for some common pollen, he can also distinguish some common ornamental subfamilies. In the eyes of knowledgeable people, it is not too much to call a Buddha's name.

Therefore, the forensic doctors of the Beijing Bureau who were busy in the same laboratory found that Jiang Yuan was constantly picking up pollen while making records in the notebook next to him as if he didn't need any reference materials.

The TN brand leather notebook looks like a silly white-collar at first glance, but the forensic doctors of the Beijing Bureau more or less understand some modern cutting-edge technologies—the training from all over the country is also closely followed by the Beijing Bureau, so, This seemingly unscientific thing made several forensic doctors suspicious.

"Don't make it up." The suspicion system with forensics began to go online.

As a criminal police officer, 800 suspicions a day is considered a small number.Facing Jiang Yuan, who is not very familiar, even if he is famous, doubts are still unstoppable.The sponsor of the Huge case back then was still a Mongolian detective, and it turned out to be a bad bunch.

"Xiao Li, go and have a look." The senior forensic doctor in the office thought about it, and whispered a few words to the young forensic doctor next to him.

So Xiao Li stood up, pretending to be bored, and came to Jiang Yuan's side.

I saw a row of plant names in Jiang Yuan's notebook, some of which were painted with five-pointed stars by Jiang Yuan: narcissus, dripping Guanyin, tiger thorn plum...

Forensic doctor Xiao Li looked over unconsciously, thinking in his mind, why were these marked?
At this time, Jiang Yuan's eyes left the microscope, looked up at the forensic doctor next to him, as if he had seen through his thoughts, while writing the words "hyacinth" in the notebook, he marked it with five stars, and said : "The marked ones are all poisonous plants."

"Ah?" Xiao Li's surprised voice was partly because of what Jiang Yuan said, and partly because he thought his mind had been exposed.

Jiang Yuan really guessed what he was thinking.It's not been a day or two since he went out to do things. After more than a year of experience, most of the situations he encountered were the same.

Especially the technicians, in fact, are more skeptical.Because Muggles don't know the depth of the technology, they look at fingerprints and DNA and think that the results are automatically produced.Technicians are different. They know that some things are horribly difficult, just like certain math problems. They are at a loss and believe that someone can do it, but they don't believe that this person will appear by their side.

Jiang Yuan's eyes were attached to the microscope again, and he said in his mouth: "The pollen taken out so far is mainly domesticated, and there are pollen from a variety of poisonous plants. In addition, there are some vegetable pollen, such as cucumber pollen , pepper pollen, eggplant, loofah pumpkin, spring onion... The owner of the clothes should have a place by his side."

At this moment, the attention of several forensic doctors in the office was attracted.

Guo Xiang, the most senior forensic doctor, got up and asked first, "Why don't you live in a vegetable garden or something?"

"Because there are many indoor plants, the types of ornamental plants are very diverse, and it should be relatively rare for poisonous plants to be mixed in vegetable gardens." Jiang Yuan paused, and then said: "As far as the overall pollen map is concerned, it is more like The types of flowers and vegetables grown on the balcony are a little bit different. And the types of vegetables grown in the vegetable garden are relatively single.”

Jiang Yuan's words belonged to reasoning and judgment.Guo Xiang didn't bother, he just acted curious and said, "What does the pollen of cucumber look like? Can you take a look?"

"This." Jiang Yuan showed Guo Xiang the cucumber pollen he had picked up.

Under the microscope, the pollen of cucumber is tender green, slightly elliptical and irregular, with dense folds on it, and three yellow grooves of different shades, among which there is a thicker groove in the thickest groove. Irregular connectives.

Guo Xiang looked at it carefully, kept it in his heart, said a few words about the scene, and returned to his seat. Then he found the illustrated book of forensic botany on the intranet, and directly searched for cucumbers.

It was exactly the same.

Guo Xiang was not relieved enough, so he searched for the appearance of the pollen of narcissus, pepper and other plants, and remembered it in his heart. Then he came to find Jiang Yuan, sat next to him, and used another microscope to look at the pollen he sifted.

Sure enough, similar.

Guo Xiang heaved a sigh of relief, and then he became more suspicious. He looked Jiang Yuan up and down, and said, "I checked just now. There are 25 kinds of angiosperms. Don't you know the shape of each kind of pollen?" Maybe remember it all. This is too exaggerated."

"How is that possible?" Jiang Yuan smiled.

Guo Xiang also laughed.

Jiang Yuan said: "There are rules."

Guo Xiang's smile faltered slightly: "25 kinds?"

"Of course it's impossible. It's uncommon. It's better to distinguish the species before making a judgment." What Jiang Yuan said was true and false.

But for Guo Xiang, Jiang Yuan's modesty at this time is even more confusing.

As a technician, after verification, what Guo Xiang can do is to convince Jiang Yuan's judgment.

"So, if the vegetable garden is not considered, what we are looking for is a person who grows vegetables at home?" Guo Xiang began to discuss specific clues.

Jiang Yuan pondered for a while, and said: "Actually, you don't have to think too much about it. How about flying the drone first with the place where the bloody coat was found as the radius? As far as the types of these flowers and vegetables are concerned, I think the place where the bloody coat touches , It should not be purely indoors, there must be sufficient sunlight and a certain area to grow so many kinds of plants. If it is purely indoors, the light must be very good."

"That is to grow vegetables on the balcony, or grow vegetables on the roof." Guo Xiang concluded.

"It may also be the green space of the community, or the courtyard." The forensic doctor next to him added.

Guo Xiang nodded kindly, and then said: "Then can you please report to Team Jiang? If you fly a drone, you have to consider the situation around the scene. There should be no flying ban in my impression."

Jiang Yuan knew that he was avoiding stealing his work, so he said indifferently: "You fight, you can communicate easily in your team, besides, the clues of forensic botany can only be mine, and you can't take them away. .”

He just said it so plainly, which made Guo Xiang somewhat helpless.

Guo Xiang stopped talking too much, and took out his cell phone to make a call.

At this time, he recalled that this was the first good news after the case was opened.

Guo Xiang turned his head and glanced at Jiang Yuan. It only took more than a day. In fact, he didn't see how Jiang Yuan exerted his strength. For us, this is the most important thing.

(End of this chapter)