National Forensic Doctor

Anatomy floor.

The first thing I saw when I got off the car was the hearse, the soul-calling flags and the family members wearing mourning clothes.

Jiang Yuan and others entered the hall under the protection of the local police, and saw several family members dressed in mourning waiting inside.

Several detectives looked at each other, all a little surprised. This not only shows that the victim's family is very powerful, but also shows that the direction of this case is of great concern to the family.

Whether at home or abroad, this will increase the pressure on the police. No wonder Zhong Renlong would mark the back of this case.

"Officer, are you going to perform an autopsy on Tang Shaokui?" An old man walked over slowly, looking very imposing.

Zhong Renlong had to stop and explain in a low voice.

Soon, the old man looked up at Jiang Yuan and said in pure Chinese: "My son is in very good health. He likes fitness and running. He usually has two or three lovers. It is impossible for him to sleep with his wife until midnight without making a sound. Sudden death."

In a short sentence, the old man had already expressed all the family members' concerns, and it inevitably affected Jiang Yuan and others.

Jiang Yuan glanced at the other party, said nothing, and continued to enter under the protection of the local police. However, even if you think about it from a forensic perspective, what the old man said contains a lot of information.

The victim was in good health and was able to maintain multiple lovers all year round. At the same time, when the victim died, he was sleeping in the same bed with his wife. Considering the fact that he had multiple lovers, the family members have already pointed the finger. The deceased's wife.

When they arrived at the dissecting table, they saw that the corpse had been laid down flat. The body was unclothed and muscular, but its face was covered with makeup and its ears were stuffed with cotton.

When Jiang Yuan saw this, he couldn't help but look at Zhong Renlong...

"The deceased's wife requested that the body be cremated." Zhong Renlong said in Chinese.

"Will Da Ma also be cremated?" Mu Zhiyang asked from the sidelines.

"It can be cremated or buried. For now, the decision lies with the deceased's wife." Zhong Renlong didn't wait to ask again, and continued: "On the day of the incident, the death occurred on the couple's bed. According to our forensic judgment, The deceased died two to three hours after sleeping, but although the cause of death was suspicious, the medical examiner could not confirm any traces of homicide."

"Is the autopsy negative?" Jiang Yuan raised his eyebrows.

Zhong Renlong nodded: "The cause of death cannot be determined."

The autopsy is negative. To be precise, it should be said that it is a negative autopsy. This means that after the forensic doctor conducted systematic anatomy, histopathology, physics, chemistry, biology and other inspection items on the corpse, no fatal changes were still found. .

For forensics, you have to prove that there was fatal violence, you have to find traces of trauma, you have to prove that the death was caused by natural diseases, and there must be primary diseases, such as mechanical injury, mechanical asphyxia, electric shock, high temperature Injury, poisoning by exogenous poisons, etc. In short, whether it is inside or outside, broken, swollen, burnt, broken, turned, blocked, twisted, cavity formed, or It is an abnormal peak in the physical and chemical laboratory, and death will always leave traces.

But in practice, due to various reasons, there are indeed some corpses for which the cause of death cannot be found, thus forming a substantial negative anatomy.

This is considered a forensic accident in any country at home or abroad. If possible, no forensic doctor would want to sign the autopsy report and write that the autopsy was negative. Because in theory, most autopsies, as long as you examine them carefully, deeply and comprehensively, should have a conclusion. At the very least, you should know how you died.

But on the other hand, if you can't find it, you really can't find it. Although most of the negative autopsies are still due to missed tests - this is also what makes forensic doctors feel embarrassed - but due to limited abilities, negative autopsies will always be done. Appearance is reality.

There are even some very good forensic doctors who will reluctantly sign autopsy reports of negative autopsies.

To take things a step further, sometimes it is these awesome forensic doctors who dare to sign autopsy reports with negative autopsies.

Jiang Yuan glanced at Zhong Renlong and felt that he was not digging a hole for himself, but simply didn't understand.

The cause of death of most corpses is actually not difficult to determine. Forensic pathology is the most commonly used and mature technology in forensic practice. With comprehensive anatomy and the use of modern technology, it is rare that the cause of death cannot be determined.

But precisely because of this, when an ordinary forensic doctor gives a negative autopsy conclusion, it is difficult for an expert forensic doctor to travel through time and give a positive conclusion - not to mention that the second autopsy is more difficult, and the ones that have been screened once The corpse itself represents a difficult and complicated disease.

However, Jiang Yuan did not have to sign the autopsy report, so he did not have to bear any more burden.

Zhong Renlong continued:

"The deceased lived in a villa on the outskirts of the city. The villa has three floors, and the couple lived in the master bedroom on the third floor. After the police received the call, the deceased had been moved from the third floor to the living room, and two emergency doctors came, but no treatment was given. First aid, doctors confirmed death twice.”

"At five o'clock in the afternoon that day, forensic experts from the police station arrived at the scene and conducted a preliminary examination of the body at the request of the family..."

While talking, local forensic expert Jacob came out.

Jacob, who is in his 50s, still has a slim and dark appearance, with a cold and strong British expression on his face. When he saw Jiang Yuan, he smiled unconsciously and showed a few teeth to ensure that the other party was sure. He was laughing.

When he was studying in England, he learned forensics and ruthlessness, as well as humility. How flattering he was to the anatomy professor back then, how humble he is to Jiang Yuan today.

Jacob had a solid understanding of Jiang Yuan's abilities during the previous live broadcast of the "Internet Celebrity Death Case". Afterwards, he took out the video and pondered it over and over again.

Therefore, after a thorough analysis and speculation, Jacob's smile was far beyond the standard when he saw Jiang Yuan again, fearing that Jiang Yuan would misunderstand his reserved smile.

"Hey, was it Mr. Jacob who did the autopsy?" Jiang Yuan had a good impression of Jacob. He was almost an expert in LV3 forensic pathology in a single field, and his performance in other aspects was also basic. Among all human beings, it is considered excellent.

And the autopsy in which he participated came out negative? Jiang Yuan couldn't help but frowned.

Jacob knew Jiang Yuan's thoughts and said hurriedly: "The first dissection was not done by me, but by my apprentice."

He said and pulled out a young man who was less than 40 years old.

The young man's right cheek has deep nasolabial folds. When talking about this case, he also looked sad and said: "After the autopsy, there were more spot-like bleeding on the surface of the heart, the heart wall was filled with non-coagulable blood, and there was a gap between the lung membrane and the blades. There is some patchy bleeding and laryngeal edema. Other than that, there are basically substantial abnormalities..."

"The key is that the poison test did not detect common drugs." Jacob added.

"In other words, there is slight damage, but it is difficult to make further judgments." Jiang Yuan gave a summary.

Master and apprentice Jacob felt a little more relaxed and nodded in unison.

Jacob said: "At present, the conditions for inferring sudden death are not sufficient, and if it was murder... the deceased's wife slept in the same bed with the deceased throughout the night, claiming that there was nothing abnormal... the deceased's wife weighed 120 pounds. The deceased had been exercising all year round and weighed 170 pounds. I am afraid he could only be killed by poison."

"Let's look at the body surface first." Jiang Yuan couldn't deduce the results out of thin air, but if it was a poison, toxicology testing was originally the gold standard.

However, toxicology testing is a comparative testing. In other words, the heart blood or other tissues of the deceased are sampled first, and then run into a gas phase or liquid phase mass spectrometer. The resulting mass spectrum is automatically searched in the database. The principle is actually the same as that of fingerprints. Not only does the sample need to be , the database must also have the mass spectrum of the corresponding substance.

Many poisons actually do not have mass spectra. Just like thallium poisoning, the police in the past would not test it. For more biological poisons, there may not even be standards. It is often necessary to find the poison first and then compare it.

In this case, the forensic approach is usually to find a passage. The poison was either eaten, inhaled, or injected. If this can be confirmed, it will be a clear guide for the investigation. At the very least, it will not be a negative autopsy.