Ariana began extracting DNA from suspicious tissue fragments in the soil, then performing PCR, electrophoresis, and sequencing, which was limited in the lab, but basic DNA sequencing was possible.

The DNA sequence Anna will eventually hand over to Omega, who is the core of the whole work, and she has a huge gene library in her hand, which contains not only the genome sequences of normal organisms, but also the genetic sequences of infected and hunters, and the results obtained by Ariana will eventually enter this gene pool for comparison, so as to find the owner of the biological tissue fragments.

The grave-digging creature may be able to escape human eye and surveillance, but not the cutting-edge technology of modern biology.

The electrophoresis machine indicator light on the table lights up, making a "tick-tick-" prompt sound.

"Phoebe, help me turn off the electrophoresis." Ariana sat motionless, holding a pipette in her hand, carefully adding solution to the microtube.

The girl nodded and turned off the power on the electrophoresis machine.

"Take the board off." Ariana continued, "Then go and get the tubes out of the PCR as well." ”

Phoebe carefully removed the polyacrylamide gel and the results of the electrophoresis were satisfactory, with very clear separation bands.

"Omega, how is your comparison going over there?" Ariana asked.

The computer screen in her hand lit up, and Omega, in a white lab coat, ******, stood on the edge of the desk with a serious face, Omega often appeared in the library lab dressed like a researcher, and her voice came from the computer's loudspeaker.

"No suspicious individuals have been found in the twenty-three sets of samples that have been compared so far." "Eleven of the groups came from the cockroaches and five from the leeches. ”

"Cockroaches?" Ariana was stunned, "Leech? What are they? ”

"Cockroaches, belonging to the class of insects, leatheroptera in the winged subclass, commonly known as 'ear clip worms', also known as scissor insects, are very common small insects in the soil." Omega waved his hand and released a picture of a black insect with a clip at the end, which Anna and Phoebe both recognized as a common small bug, "As for the leech, it belongs to the planarian class in the phylum Platyzoa, and it is also a common soil organism. ”

Anna nodded, "None of these things have the ability to dig holes, do they?" ”

"The largest of the cockroaches is the size of a paper clip." Omega replied, "And the leech is an invertebrate mollusk that looks like an earthworm. ”

"And what about the other seven groups?"

"The other seven sets of samples were all from plants." Omega replied, "Cruciferous, Araceae, Solanaceae, and Orchidaceae. ”

Ariana nodded, "I see. ”

She retrieved a large amount of dirt, in which Ariana believed she could find the clues she was looking for, after all, no matter what the creature, they could not avoid leaving traces, which may be too small for ordinary people to detect, but they are invisible to modern biotechnology.

But the problem today is that there are so many tissue samples that can be collected in the soil, and the abundance of insects, plants, and humus in the soil can seriously interfere with Ariana's work. So far, Ariana has collected more than 100 samples, and at this rate, she is afraid that she will have to extract at least one or two hundred samples before it can be completed, and it will take a lot of time to analyze and compare all these samples.

Ariana needs to find the only correct clue in the midst of so many distractions, and it's like looking for a needle in a haystack, and the actual tissue fragments from the tomb robbers may only be a few tenths of a microgram, and they will be missed if they are not careful.

"Omega, here's the new data." Ariana handed over the sequencing results of a batch of DNA to Omega.

"OK, Roger." Omega snapped his fingers on the screen, pulled out a small notebook out of nowhere, "Wait for me for a few minutes......"

Ariana breathed a sigh of relief and stood up to move her body.

Phoebe hugged the large stuffed teddy bear and sat on the side and dozed off, her head buried in the bear's belly.

She had just turned off the electrophoresis for Anna, and in the blink of an eye, she fell asleep.

Speaking of which, the laboratory is really boring, and only a researcher like an old monk like Ariana can stay here all day, and no one else can stand it. When Lu Xun was an assistant in the laboratory, he often played games with Zhao Gao and them online to pass the time, otherwise he would be idle and grow mushrooms.

Ariana loses track track of time as soon as she gets to work, and she often looks up only to find that it's already dark, leaving her assistant aside.

Recently, it has been very peaceful in the security area, and the work in the monitoring room is not tense, so Phoebe came to help Anna, and it can be regarded as seeing what it means to be an old monk...... Ariana can really sit still for five hours without even going to the toilet.

Ariana picked up Phoebe, who didn't wake up, but just adjusted her position, curled up in Anna's arms, and slept more soundly.

Phoebe was also exhausted, and followed Ariana for a few days and nights, sitting down and resting for five minutes before falling asleep.

Anna carried her out of the lab and placed her on the bed in the next lounge, and placed the large stuffed teddy bear next to her pillow, the girl was eighteen years old and still inseparable from the bear...... Anna had forgotten who had given her the bear, and in Ariana's memory, the bear had followed her from the first time she saw Phoebe Cristina, when the little girl was not as tall as a bear.

Anna leaned down and brushed Phoebe's forehead bangs, and then pinched the bear's face, the bear's face was already bald, this is also an old bear, probably the same age as Phoebe.

"Sister Anna......" The little girl's cheeks moved, muttering in her sleep.

Ariana smiled.

Since Zhao Mu's death, Phoebe has been closest to Anna in the academy, followed by Lemon, this little girl is close to some cold icebergs, and Anna and Lemon do not reject her. When Phoebe Coristina was a child, she often followed Anna with a teddy bear fart, and the Russian genius beautiful girl, despite her impatience with her hands in her pockets, still acquiesced to Phoebe's younger sister.

"Anna?" In the lab next door, Omega was shouting, "The results are in!" ”

Ariana got up, hurried over, and closed the door to the lounge with her backhand.

The room was quiet.

"Sister Anna......" Phoebe was still muttering in a low voice, "Die......"