Chapter 12 Capturing Cells
Murong Fei paced alone in the office, he thought hard, he knew that he was an investigator of the Criminal Division, and everything had to be based on objectivity, not imagination, imagination could only bring direction for himself, but grasping the direction relied on those evidence that could be seen and touched. Pen × fun × Pavilion www. biquge。 info
He kept imagining Chen Chen's movements at the scene in his mind, and he suddenly thought that if this hair was indeed placed by Chen Chen on purpose, then when she placed this hair, Chen Chen's hand would touch this hair, and the hair would inevitably leave the shedding cells on Chen Chen's skin.
Thinking of this, he immediately dialed Si Ling's mobile phone: "Hey, Si Ling, is that hair still at the scene?" ”
"Yes, we're only going to get rid of the roots, and the rest of the hair is there."
"Okay, now there's a new problem."
"What's the problem?"
"I have a new idea now, but it's a bit challenging."
"Don't sell it, don't you often push our limits?"
"That's it, I now suspect that Chen Chen faked the scene, I suspect that she put this hair on the nail of the female corpse, and I need your help now ......"
"Make Chenchen's shedding cells in your hair, right?"
"Yes, yes, yes."
"It's not too difficult, but the premise is that Chen Chen's hands really have to have shedding cells sticking to this hair."
"Didn't you just bring in one of those cell traps?"
"This machine has just been introduced, and there are no successful cases yet, so let's take this hair and boil the pot."
"Then I'm bothering you."
"When did you become so polite?"
Murong Fei is indeed not so polite on weekdays, but today's case is extraordinary, he feels that the pressure is too great, not to mention that he feels that he has misled the direction of the investigation, if Si Ling can't fix Chenchen's behavior through the DNA of the shed cells, then what will happen next in this case, should he officially put forward the view that Chen Chen is camouflaging the scene, will anyone believe him?
Today is Si Ling's birth RB came to take the child to Binjiang Square to eat hot pot with her husband in the evening, Murong Fei's phone call disrupted her plan, however, she quickly calmed down a little ups and downs, and came to the examination room with light steps.
Si Ling quickly found the hair from earlier, and she sent the sample to the cell trap's lab through the special window for examination.
This is a specially renovated laboratory, the cleanliness requirements of the environment are simply to the limit, just to enter this laboratory, staff must first change into special work clothes, but also need to pass through a buffer zone with strong wind adsorption, to absorb the pollutants that may remain on the body.
Si Ling passed through the buffer zone, entered the laboratory, she took out the hair from the sample window, and began to operate the cell trap, this machine has just been introduced from the United States, she has tried it a few times, the effect is really good, even if only one cell adheres to the surface of the guest, this machine can capture it, it is not an exaggeration to say that the capture is not exaggerated, because in the field of high magnification, the cell runs as it says, without a momentary capture action, it is really difficult to capture the target cell.
Si Ling put her head into the observation area, began to move the control lever next to it, the IPS screen display immediately showed what she saw under the field of vision, she carefully observed the changes on the screen with the help of the software's automatic cell recognition assistant, the software is also very intelligent, according to the morphology and structure of the cell, automatically mark the position of the cell, after the observer confirms, click the "capture" button, you can drive the machine to capture the target cell, put it into a special sample test tube.
After looking at it slowly for a few minutes, she didn't find a decent cell on her hair except for the oil stain, but Si Ling didn't give up, she believed that as long as she continued to look at it, maybe there would be a miracle.
The manipulator kept moving in Si Ling's hand, and the field of vision on the monitor kept changing, suddenly, the shape of a cell was marked on the screen, and the yellow outline of the mark kept flashing on the screen, Si Ling clicked "Enlarge", and after a closer look, it was indeed an epithelial cell.
Si Ling was overjoyed, it seems that today's work was not in vain, this epithelial cell is firmly adhered to by the oil on the hair, the next thing is to capture it, and then enter the DNA testing program, whether it is the epithelial cell left by Chen Chen, the result will naturally know.
Si Ling handled this hard-won epithelial cell with ease, she knew that Murong Fei attached great importance to this, because listening to his kind words to herself, she knew that if he didn't talk like this usually, this result must be very important to him.
The cells are processed and placed in the amplification machine, so that the DNA can be multiplied geometrically through amplification, so that the gene sequencer can detect the locus.
The amplification instrument had begun to count down, Si Ling breathed a sigh of relief, and was about to drink saliva, but when she turned around and saw that the gene sequencer was finishing a task, she remembered that it should be the test results of the nameless corpse by the canal that Su Yi sent over in the early hours of the morning.
According to the convention, the DNA test results of the nameless corpse are separately established and compared with other databases in real time to find the source and relatives. Si Ling returned to the data analysis room, remotely obtained the test results to the local computer, she began to skillfully click the mouse for analysis, and suddenly found that the genotype of the nameless corpse was very familiar, and she was thrilled all over her body, isn't this genotype the same as the hair on the nails of the female corpse yesterday?
Si Ling couldn't believe her eyes, she immediately called up the genotype of the hair, compared it one by one, and it was exactly the same.
That's weird, Si Ling carefully recalled the process of collecting materials in the early hours of the morning, and after making sure that it couldn't be caused by her own pollution, she began to sort out her thoughts.
Maybe Murong Fei was thinking too much just now, and now this nameless corpse may be the real murderer, when he killed someone, his hair was plucked by Chenchen's stepmother, and now he has linked him to his hair again through DNA. When Si Ling thought about the problem, she forgot to look at the screen, so that she didn't know that the screensaver came out.
Si Ling felt that she had to tell Murong Fei immediately, and she immediately dialed Murong Fei's mobile phone: "Murong, shocking news!" ”
"Hair cells?"
"There are cells, and it's too early to get results, but I don't think it matters anymore."
"How?"
"I'm telling you, I've helped you find the owner of your hair."
"What did you say?"
"It's true, the nameless corpse that the second group found by the canal in the morning is the owner of this hair."
"What? Wait for me to wisps, the hair on the hands of the female corpse, the nameless corpse by the canal, this can't be connected. ”
"That's not necessarily, you see, I'm imagining that if this person is really the murderer, will he commit suicide under the strong investigation pressure of the police."
"What you say is not unreasonable, but I still look forward to the cells in my hair."
"Murong, don't be persistent, wait for me to tell Wulong the result, and see if you can withstand the pressure."