Chapter 237 Lu Chuan’s conclusion
The laboratory is currently being explored.
Shen Yan is visiting the fruits of Lu Chuan’s labor in the past six days.
“These are the ones you cultivated?”
In the current exploration laboratory, there are already more than fifty petri dishes on the table.
Some of them seemed empty, with nothing in them.
Some are filled with flying sarcophagus flies, and others are crawling with sarcophagus larvae.
Lu Chuan nodded: "There is still one experiment that has not been completed, and the results should be available tomorrow morning."
"It's just..."
"What's wrong?"
Although Shen Yan is a forensic doctor, she has also learned the basic theories of forensic entomology.
But this is the first time I have seen people like Lu Chuan cultivating Sargassum fly larvae in petri dishes.
Lu Chuan shook his head: "Through this cultivation of lineage fly larvae, we can more accurately determine the time when the first batch of lineage flies parasitized on the corpse."
"However, from the current results, Look, something doesn’t make sense. These eggs seem to have taken too long to hatch, as if..."
Lu Chuan opened one of the petri dishes and found a pupa inside. This is a larvae that is about to hatch. .
"It looks like it has been refrigerated for a period of time!"
Lu Chuan discovered a strange phenomenon while cultivating hemp larvae.
The intergenerational relationship of these Sarcophagus larvae is very simple, they are all larvae of the same generation.
That is to say, the sarcophagus larvae parasitized on the corpse do not hatch and then lay eggs.
This raises a problem.
Lu Chuan collected DNA information from the collected Sarcophylla larvae.
It was found that some sarcoid fly larvae have homologous DNA, that is, eggs laid by the same sarcoid fly.
But the development of these lineflies is not the same, some grow big and some grow small.
This is not a common occurrence among cadaver parasites.
Unless it is under sealed conditions, the body will be found by flies within ten minutes of death.
In other words, the time for flies to lay eggs and the time for corpses to die can be considered almost equal.
This is also an important reason why forensic entomology exists.
However, the growth and development gap between the homologous larvae found in this corpse is very large.
The first batch that Lu Chuan cultivated had pupated and turned into lineflies two days ago.
But the small larvae are just over one centimeter now, and they are still about a week away from pupating.
Lu Chuan is now waiting for an intermediate result so that the accurate time can be determined.
It is just a few larvae that are pupating. Through their pupation time, a lot of important information can be calculated.
Shen Yan doesn’t know much about this aspect. She only knows some basic theoretical knowledge.
“I heard from my master that things are not going well with Team Leader Ren Qiang and Team Leader Sun Jun?”
Lu Chuan nodded, he also heard about it.
"Brother Hui and the others found the first scene where the murderer dumped his body early the next morning after the incident. I went to conduct an on-site investigation."
"But there were very few traces left at the scene, and the heavy rain The wash destroyed everything, but it was found that the body should have been dragged, and a shoe was left at the scene."
"Some hair we collected was also confirmed to belong to the deceased. There are no other major discoveries.”
“Team Leader Sun Jun also conducted a detailed investigation based on the fact that the clothes you found were not consistent with the size of the deceased’s body.”
"They are currently holding a case analysis meeting and should be reporting on the situation."
"But I heard from Team Leader Sun this morning that the situation is not very optimistic."
Lu Chuan and Shen Yan came early in the morning.
I met Sun Jun on the way to the office and chatted for a while, but didn’t ask for any specific details.
I only know that there are difficulties in finding the expensive underwear on the body.
Conference room. "Can you contact the headquarters of this underwear company and check the information about consumers who purchased this underwear across the country?"
Now that Haizhou City has determined that there is no problem with people buying bras of this style and size, let’s start nationwide.
Since only thirteen pieces were sold in the entire Haizhou City, it is estimated that the number nationwide will not be particularly large.
Furthermore, this luxury store does not have sales outlets in all cities.
It shouldn’t be particularly difficult to check.
"Let me try. The headquarters of this company is not in Haizhou. I will contact the criminal investigation detachment over there to see if I can help."
Sun Jun actually thought about this method, but whether it can be done He wasn't sure either.
But whether it can be found is hard to say now. After all, the sales of this underwear are not under real names.
The reason why the Haizhou City Criminal Investigation Detachment conducted such a thorough investigation is because this territory is Haizhou.
But even so, it took a week to figure it out clearly.
And if this scope is expanded to the whole country...
Sun Jun has no confidence at all.
They have had similar experiences before, but without exception they have not succeeded.
Qin Yong actually knows this situation.
He came from the front line, and the cases he handled also encountered similar situations where the scope of investigation needed to be expanded.
But there are very few successful ones, but you can’t stop checking just because the success rate is low.
Of all the clues now, this one is the most obvious, so I can only pursue it.
Of course, the investigation by Sun Jun and others cannot determine who the murderer is just based on a bra.
After all, even if we find all the people who bought this D-cup bra, we can't say who is the murderer if his bra is lost.
Otherwise, Sun Jun would not have to take more than 20 people to investigate Haizhou for a week.
The meeting ended quickly.
Now surveying the office.
"How's it going? What's the progress?"
Lao Bai handed Liu Guodong a cup of hot tea and asked about the situation of the case analysis meeting just now.
Liu Guodong shook his head.
"Ren Qiang has already checked the surrounding villages. There are no missing persons and there are no witnesses. The place where the murderer dumped the body is so remote that there are no people fishing."
Lao Bai I still have some experience with this.
A place that no one goes to when fishing is definitely considered inaccessible.
"What about Sun Jun?"
"There was no result. The thirteen people who bought the D cup bra in Haizhou City all investigated and found nothing. .”
"Old Qin is going to attack the whole country to see if he can find any clues about the bra."
The whole country?
Lao Bai shook his head when he heard this.
After so many years, the nationwide investigation can only be said.
One human life does not require the use of the country’s resources.
Moreover, the bra was inspected here.
There are no specific substances on it, no hair or anything.
Some scraps of skin also belong to the deceased.
"If you ask me, we have to start from the surrounding areas. The murderer can't leave the body silently. Although it is farther away, there won't really be no one there?"
Yang Sen felt Let’s start from the scene.
"It's not like you've never been to the scene. There's no one living nearby. Ren Qiang and the others have been checking for almost a week, but there's nothing there?"
(End of Chapter)