Chapter 820 Negative Anatomy

Anatomy building.

The first thing you see when you get off the car is the hearse, the soul-calling banners, and the family members in mourning.

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

Several criminal police looked at each other and were 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 members.

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

"Officer, are you going to do 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 and die suddenly without a sound."

In a short sentence, the old man has expressed all the family's doubts, and it inevitably affects Jiang Yuan and others.

Jiang Yuan glanced at him and did not speak. He continued to enter under the protection of the local police. However, even if you think from the perspective of a forensic doctor, what the old man said contains a lot of information.

The victim was in good health, so he could maintain multiple lovers all year round. At the same time, when the victim died, he slept in the same bed with his wife. Considering that he had multiple lovers, the family has already pointed the finger at the deceased's wife.

When I arrived at the dissection table, I saw that the body was already lying flat. The body was naked and had a strong body, but the face was made up and the ears were stuffed with cotton.

Seeing this, Jiang Yuan couldn't help but look at Zhong Renlong...

"The wife of the deceased requested cremation of the body." Zhong Renlong said in Chinese.

"Does Malaysia also cremate the body?" Mu Zhiyang asked.

"It can be cremated or buried. At present, the decision is in the hands of the wife of the deceased." Zhong Renlong didn't wait for further questions and continued: "On the day of the incident, the death occurred in the bed of the couple. According to our forensic judgment, the deceased died two to three hours after sleeping. However, although the cause of death is suspicious, the forensic doctor has not been able to confirm the signs of homicide."

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

Zhong Renlong nodded: "The cause of death has not been determined."

The autopsy is negative, which should be accurately said to be a negative autopsy, which means that after the forensic doctor has conducted systematic anatomical, histopathological, physical, chemical, biological and other examinations on the body, no lethal changes have been found.

For forensic doctors, if you want to prove that there was lethal violence, you have to find traces of trauma. If you want to prove that death was caused by natural diseases, there must be primary diseases, such as mechanical injury, mechanical asphyxiation, electric shock, high temperature injury, exogenous poisoning, etc. In short, whether it is inside or outside, broken, rotten, swollen, burnt, damaged, bent, blocked, twisted, or hollow, or just an abnormal peak in the physical and chemical laboratory, death will always leave traces.

But in practice, for various reasons, there are really some corpses where the cause of death cannot be found, which has formed a substantial negative autopsy.

This is considered a forensic accident in any country at home or abroad. If possible, no forensic doctor wants to sign the autopsy report as negative. Because in theory, most autopsies, as long as you check carefully, deeply and comprehensively enough, should have a conclusion. At the very least, how the person died should be known.

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 detection - this is also the embarrassing part for forensic doctors - but due to limited ability, negative autopsies will always appear, which is the reality.

Even some very powerful forensic doctors will reluctantly sign the autopsy report of negative autopsies.

Going a step further, sometimes, it is these powerful forensic doctors who dare to sign the autopsy report of negative autopsies.

Jiang Yuan glanced at Zhong Renlong and felt that he should not be digging a hole for himself, but just pure ignorance.

The cause of death of most corpses is actually not difficult to judge. Forensic pathology is the most used and most mature technology in forensic practice. Comprehensive autopsies combined with the use of modern technology rarely fail to give the cause of death.

But because of this, when an ordinary forensic doctor gives the conclusion of negative autopsy, it is difficult for expert forensic doctors to travel through time and give a positive conclusion - not to mention that the difficulty of a second autopsy is higher, and the body that has been screened once 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 in the suburbs. The villa has three floors, and the couple lived in the master bedroom on the third floor. After the police received the alarm, the deceased had been moved from the third floor to the living room, and two emergency doctors came, but no emergency treatment was performed, and the doctors confirmed the death twice."

"At five o'clock in the afternoon of the same day, the forensic expert of the police station arrived at the scene and conducted an initial examination of the body according to the request of the family..."

As he spoke, the local forensic expert Jacob came out.

Jacob, who was in his 50s, still looked small and black, 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 that he was smiling.

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 a single field of forensic pathology at LV3, 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 brought 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 punctate 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 that he could only be killed by poison. "

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

However, toxicological testing is a comparative test. 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.