"I'm not going to solve the case. Pen %Fun %Pavilion www.biquge.info" Yang Rui followed Cao Da's side and explained in a low voice.

Cao Da smiled and said, "Director Yang......"

"It's better to be called Yang Rui, and I'm not an official director either. Yang Rui said.

Cao Da nodded and said, "Then Yang Rui, you don't need to solve the case, we just say that you have new technology now, and you can apply it if you want to." Let's discuss it and try to find a case that suits you. ”

"Won't it be too much trouble for the other party. Yang Rui raised his eyebrows slightly.

Cao Da smiled and said, "I'm going to introduce you as the Chinese ambassador to Sweden now, what can I do if he is troublesome." ”

Cao Da looked at Yang Rui and said, "You don't have much time, I guess you don't have time to re-establish the relationship, it's better to just do it." Besides, it is not necessary to let their director be in charge of this matter, and it is enough to introduce a subordinate to you. ”

Yang Rui looked in the direction pointed by Cao Da, and sure enough, he saw several guys in police uniforms.

Cao Da saw that Yang Rui was a little more relaxed, and said: "The PCR you said is like a fingerprint, right? Is it more accurate than a fingerprint? How many percent is similar?"

He needs to know some relevant information in advance, but he doesn't need to know the specific content in detail, and the things at the dinner are just like a wine party, just the beginning.

Yang Rui pondered Cao Da's question for a while, and said: "PCR technology is to popularize DNA detection, to say how accurate it is than fingerprints, if there are suitable biological clues, I mean all kinds of bodily fluids and hair, which are much more accurate than fingerprints." ”

"It's better to have a measure, and foreigners believe in that. ”

"A million times?" Yang Rui shrugged.

The identification of fingerprints is still semi-dependent on manual judgment until later generations, and the probability of criminals leaving full fingerprints is relatively low. DNA is different, as long as it is not strongly contaminated, the accuracy of DNA is extremely high, and the repetition rate is even lower.

Cao Da was stunned for a moment when he heard this, and repeated: "A million times so high?"

"The technology of biology has developed later, and it was originally astronomical. Yang Rui paused for a moment and said, "Let's put it this way, if there is a drop of sweat on the ground, give me the matching instrument, and collect information from everyone in the room again, I can know whose sweat it is." ”

What Yang Rui said may be the basic knowledge that children in later generations know, but to Cao Da's ears, it is like a fantasy.

Cao Da glanced at Yang Rui seriously, and found that he didn't look like he was talking big, so he couldn't help but whisper: "Is it really so powerful?"

"Everyone in the United States has landed on the moon, and we can check out a drop of sweaty DNA, which is nothing. Yang Rui is both humble and proud.

In fact, the uniqueness of DNA, or its various characteristics, was made clear as early as the fifties and sixties, but DNA testing for forensic identification did not appear until the late 80s and early 90s, and the key is to solve the problem of the amount of DNA used by PCR.

Before the invention of PCR, if you want to detect the DNA of living organisms, you need not a drop of sweat, but a tube of blood, or even a tube of blood is not enough, you have to store a large amount of DNA-containing substances to mix up enough for testing.

PCR is different, PCR is a lossless amplification process, as long as there is one DNA strand, it can double it in a very short time, one unit time becomes double, two times per unit time, then 8 times, 16 times, 32 times, 64 times...... The usual number of cycles of PCR is 25 to 30 cycles.

The amount of DNA obtained by circulating 25 times will be 33.55 million times the original amount, and the amount obtained by circulating 30 times will be 1 billion times, which is a huge amount that cannot be provided by a tube of blood or a kidney.

In fact, the total number of somatic cells in the human body is less than 100 trillion, which is only the level of 50 PCR cycles. In other words, if a person is strangled, all the DNA material has to be extracted, and it is better to let the PCR work for 24 hours longer.

It can be said that with or without a PCR machine, the research method of human genetics is completely different, which is the embodiment of a proper generation difference.

The invention of PCR can win the Nobel Prize without the slightest problem.

From the perspective of Yang Rui in the future, even if it doesn't have to operate, PCR will definitely win the Nobel Prize, because its value is also cyclically expanded, and it will become stronger and stronger in the 90s, 21st century, and 10s. The reason why Han Chunyu's pseudo-achievement can be called the Nobel Prize-level is because it shows a more efficient genetic tool, and PCR is an ultra-efficient genetic tool at the ancestor level.

With Yang Rui's age, he will definitely be able to wait until PCR to win the Nobel Prize in his lifetime. If it didn't work in the 80s, it would be in the 90s, and if there was no hope in the 90s, it would be another ten years, or another ten years, and as long as people live, the hope of the Nobel Prize will increase day by day.

It's just that Yang Rui is not willing to wait.

Whether there is a Nobel Prize or not, the treatment of scientific research and political treatment are very different.

Yang Rui is now in China, whether he wants funding or strives for staffing, he has to describe his work over and over again and introduce his achievements, but if there is a Nobel Prize, it is a completely different world, and it is not a joke that funds and staffing come with legs.

Theoretically, Nobel laureates fighting on the front line can get a steady stream of resource support, which is exactly what Yang Rui desires.

In contrast, what about making 100 billion, it is not necessary to think about reinvestment every day, and in the end, it is not necessary to consider wills and donations, and before dying, you have to dedicate your remaining time to the foundation.

Ambassador Cao looked at Yang Rui's confident expression, couldn't help but smile, and said, "I'll leave it to you next." ”

As they spoke, the two of them had already arrived in front of the Stockholm police chief.

"Director Sherwood, welcome to the Chinese Embassy. Cao Da had already learned the information of the director from his assistant, and in a few sentences, he introduced Yang Rui to the other party.

Now is the period of the most Sino-Swiss cooperation, and the indifference of the Swedes is accompanied by politeness, and Director Sherwood also nodded to Yang Rui politely.

"When I came to Sweden, I heard that Swedes don't like to greet each other, so I was told to be more direct when I spoke. Cao Da was stout but long-sleeved, and in the simplest way, he turned and said, "Director Sherwood, Mr. Yang Rui wants to try his new technology in Sweden, would you like to hear about it?"

"New technology?" Sherwood's cheeks flushed, and in the blink of an eye, he drank another glass of whiskey.

Yang Rui took over the conversation and said in English: "I want to use PCR in criminal investigations, this is a very good technology, which can identify suspects more easily than fingerprints." However, this technology has a certain cost and is not suitable for promotion in China, so I would like to try it in Europe. ”

Swedes have a good command of English, especially government officials, who are generally proficient in English.

Yang Rui's words came out, Cao Da couldn't help but be a little anxious, how to do the news well, and talked about money again.

He didn't understand Yang Rui's scruples.

If he is making money at a loss just to make a big news, the academic community may not know what to think of him, and it is better to do it as a simple business.

Moreover, Yang Rui believes that the value of PCR can attract Sherwood, if he is not carried away by alcohol.

Immediately afterwards, Yang Rui used as simple sentences as possible to describe the use and meaning of PCR, and focused on examples: "For example, if there is a rape case on the train, and the victim cannot identify the murderer, we can collect DNA from the men in the whole train, compare it with ***, and directly confirm the murderer." ”

Cao Da was nervous when he was listening, is it really okay for you to talk about this when you meet?

Yang Rui just couldn't see Cao Da's expression.

From his experience these days, the Swedes are not shy about talking about sex, as they do on their television stations, and the Swedes are notoriously public about sex, and their openness often makes Americans feel ashamed and scoffed, not to mention their professional attitude.

Director Sherwood didn't think there was anything wrong with what Yang Rui said, but instead aroused interest, and said, "I understand what you mean, which one can you determine among the suspects?"

"In the case of biological traces, yes. Yang Rui explained his theory of a drop of sweat as if he had told Cao Da.

The Swedes have always been fond of new technologies, just as they have made American products disposable, and they have spared no effort in the development of new technologies, which is why they have been able to build a country that can independently design and manufacture the latest fighter jets with a population of 9 million people.

Director Sherwood was a little interested in the technology Yang Rui said, half of which was because of Yang Rui's explanation, and the other half was because he heard about Yang Rui's reputation, and when he came to the Chinese Embassy to attend a dinner, he would naturally hear about the celebrities here.

Director Sherwood asked, half-curiously, "If there is a drop of blood, you can also check whose it is, does that mean?"

"That's right. Yang Rui affirmed: "Any tiny biological trace is fine." ”

"Forgive me, if I'm right, can hair be too?"

"That's right. ”

"In that case, we really have a case where we might be able to use your new technology. Chief Sherwood was a little concerned and said, "We had a homicide in a nearby town, and our detectives searched the whole town, but there were no clues, and then there were two more cases, and the same was fruitless......

"You're talking about the Malle case. The person standing next to him immediately called out his name.

Director Sherwood nodded and said, "We have the clothes used by the murderer, as well as the murder weapon, I think we can find hair on it, but I'm afraid there won't be too many." ”

"The Malle case is three homicides in a row. ”

"Three people died in two months in a small town, and when we first heard about it, we were all terrified. ”

"I heard it was done by people in the town. ”

When the word "Malle" appeared, everyone around was interested.

Obviously, for the Swedes at this time, this is a famous case.

Yang Rui also cheered up and asked, "Is the murderer in the town?"

"Yes, Malle is a lonely town, there's only one way to Stockholm, and the people are very fixed and united, you know, it's a typical Swedish town, so when you realize there's a murderer in the town, everybody doesn't feel good. Director Sherwood looked at the people around him and paused, "The Malle case has attracted a lot of attention from the whole of Sweden, and it would be great if your technology could find clues." ”

In the snowy land, away from the world, it is not only a typical Swedish town, but also a typical Nordic town.

Yang Rui nodded without hesitation and said, "Director Sherwood, if you are willing to try to adopt new technology, I can persuade Sinovel to do the test at cost price." ”

Cao Da coughed twice and said in Chinese: "Yang Rui, don't talk about money at this time." ”

Sherwood was unimpressed and asked, "How much budget do you need?"

"Every time I do a test, it's about 3,000 crowns. Yang Rui was able to offer this price, or it depends on the high temperature polymerase is his patent.

Even so, Cao Da was taken aback by the price, even if it was a sparsely populated Nordic town, there would be at least a few hundred people. A town that can kill three people doesn't sound too few.

Sherwood calculated and said, "One person does one test, there are less than 1,000 people in Malle, it's 3 million crowns, is that a calculation?"

"Almost, for the sake of accuracy, some people will do it twice, but the total will not increase much. ”

Sherwood muttered, "Sounds good. ”

Yang Rui guessed that he might not want to decide this matter at the banquet, so he said with a hot iron: "Chief Sherwood, can we make an appointment and let me go to the police station to explain to you in person." ”

"Oh, that's a great idea. When he heard that he could try, Sherwood immediately agreed.

Shitori Village said

3590 words, that's that long!