Zhou Wen followed the experimental procedure and pipetted the supernatant.

"Blowing" is an academic term that uses a test tube gun to extract the supernatant and then blow it out, with the aim of fully stirring the serum in the test tube.

Pipette back and forth a few times, then place the two DNA samples into the centrifuge and start centrifugation.

Centrifugation is completed after fifteen minutes.

Aspirate the supernatant from group A and bring it to the next electrophoresis machine and add it from the gel wells.

After closing the lid of the electrophoresis tank, selecting the electrophoresis voltage and direction, turn on the power switch, and start running the electrophoresis.

This was followed by group B, where the supernatant was also extracted and added from the gel wells of another electrophoresis machine, and the electrophoresis was also run.

Then there was a long wait.

The computer will compare the extracted DNA with the mouse genes in the "NCBI gene bank" of the United States one by one, and the time will be at least 6 hours.

Because there are 2.5 billion DNA base pairs on 20 pairs of chromosomes in mice, it takes a long time.

During this time, you can read novels, watch dramas, and eat melon seeds.

But Zhou Wen didn't have time.

I went and grabbed a guinea pig, and first observed it with the eyes of true sight.

What he didn't expect was that what appeared in front of him this time was the introduction, [Rat name: mouse, mole variant. Sex: Female. Age: 11 months. 】

"Hey, how did you see this?" Zhou Wen turned his head to look at Lin Jiayi, who was facing away from him, and the scene he had seen before appeared in front of him again.

[Name: Lin Jiayi.] Gender: Female. Age: 24. Occupation: Biology student. Physical Status: ??? Mental Status: ???]

His eyes narrowed slightly as he thought of how he could observe DNA, and soon, the picture in front of him began to become clearer and clearer......

"it...... Groove Groove ......"

The white lab coat on Lin Jiayi's upper body slowly turned into fibrous tissue in his eyes, spreading and enlarging...... Moving on, there is a white chemical fiber fabric.

The pores of the chemical fiber fabric become thicker and thicker in front of the eyes, and finally pass through this layer of chemical fiber fabric and become a black cotton fabric.

Then there is the epidermal keratotic layer, the dermis, arteries, veins, hair follicles......

At this moment, Lin Jiayi suddenly turned around and asked, "Zhou Wen, what are you looking at?"

Zhou Wen, who was interrupted, disappeared from the picture in front of him, came back to his senses and rubbed his nose and said, "Uh...... You didn't look at me, how do you know I'm looking at you?"

Lin Jiayi pointed to the stainless steel frame of the aseptic console next to her, on which Zhou Wen's reflection could be clearly seen.

Lin Jiayi asked with a smile: "Hey Zhouwen, you are so kind to help Shi Lei do the experiment, could it be just to stay with me?"

Zhou Wen: "...... How could you have such an unrealistic idea?"

Since Qu Fangfang left, Lin Jiayi probably felt that no one in the laboratory could threaten her appearance, so she spoke more and more dissolutely.

Of course, Lin Jiayi is still good-looking, she has to have a face, she has to have a figure, and the white lab coat that has been changed to a small size is tightly propped up.

is a realistic batch, thinking about finding a rich and handsome boyfriend.

And it's too calculating, and it's a bit annoying.

Lin Jiayi smiled and said, "Hey~ It's okay if you don't admit it...... Forget it, let me tell you one thing, I already have a boyfriend, and it's too late for you to chase me now. ”

Zhou Wen turned around and pinched the neck of the mouse, and said with a smile while disemboweling: "Congratulations on taking off the order." Tell me, what's the situation with the other party?"

"He is also from our school, one year younger than me, a native of Jiangzhou, and he studied CS ......"

While Lin Jiayi was talking, most of Zhou Wen's attention was on the mouse in his hand.

He found that when he pulled the bone marrow out of the rat's thigh, he could already see the DNA strands.

This is much easier to do, and he can see more intuitively the problems that may exist in the DNA extraction process.

He soon discovered that there was a high loss of DNA fragments during the rinse with a low permeability.

I wonder if it's caused by the low permeate concentration?

But fortunately, it does not affect the extraction of genes, so let's study the concentration problem later.

Next is counterweight centrifugation.

Centrifugal test of Zhou Wen plant by plant.

He soon found out the reason for the failure of group B extraction, which was a problem with the DNA extraction.

This is a common problem for novices, and other problems such as temperature control, time control, technique, etc., will affect the number of DNA strands extracted and the success rate.

Under normal circumstances, this is no way, left-handed extraction and right-handed extraction it is different, centrifugation for one second more and one second less it may fail, and the temperature will also have a great impact on a higher and lower temperature.

Because DNA is invisible and intangible, novices can only find out the possible problems through repeated experiments. In other words, it is often said that "experience" depends.

But now that Zhou Wen has the True Eye, he can directly see the DNA, and the result is completely different.

He stepped over the process of accumulating experience and became a top-level expert......

......

Time passed quickly, and it was already half past five in the evening.

Lin Jiayi stood up and stretched her waist, beat the back of her neck and walked to Zhou Wen's side and said, "Oh Zhouwen, do you want to go to eat together?"

Zhou Wen, who was "dispensing glue", didn't raise his head and said, "You go first, I'll be fine right away." ”

Lin Jiayi didn't notice that there was a layer of mouse corpses piled up in the waste bucket next to her, and nodded: "Okay, then I'll go." ”

"Hmmm......"

It wasn't until half past seven in the evening that the electrophoresis analysis was completed.

After comparison, it was found that group A was successfully extracted, while group B was unexpected, and the data was seriously unreasonable, indicating that the extraction really failed.

Zhou Wen looked at the data chart, and the corners of his mouth couldn't help but smile.

The task required 6 gene fragments, and in the afternoon, he extracted a total of 8 strains, of which 3 were obtained after electrophoresis analysis, 1 was obtained after electron microscopy observation, and 4 strains were identified by the naked eye.

At this moment, a soft voice sounded in my ears, just like a voice actor.

[The mission conditions have been met, do you want to submit the task immediately?]

After Zhou Wenleng paused, he was immediately overjoyed and immediately opened the pharmacist system.

On the blue attribute board, a prompt box pops up that reads: "Do you want to submit the task immediately?"

Zhou Wen chooses [Yes]

【Ding!Mission accomplished.】 Rewards are now available...... Congratulations on earning 100 subject experience points and 200 points. 】

After the experience is distributed, a proposal box pops up again in front of you, [Is it unboxing now?]

Zhou Wenlai was slightly excited, and became excited as the unboxing prompt popped up.

"God willing, open a million ...... No, 10,000 will do. It's really not okay, 1000 yuan is fine. ”

He is really short of money now, and he has 100 yuan left in all his belongings.

It's only March 19th today, and the 100 pieces will stick to the beginning of next month.

In fact, when he came to school a year later, he had 2,000 yuan on him.

As a result, the mobile phone was accidentally broken, and it took 1000 to buy a three-hand 7P from the junior, and then recharged 600 yuan of meal card, and bought some things piecemeal, leaving 100 yuan.

Zhou Wen prayed silently in his heart, and then chose [Yes]

As soon as I finished choosing, a black wooden texture treasure chest popped up in front of me, with intricate patterns engraved on it, and an ancient key suspended next to it.

"It's quite like that~" Zhou Wen rubbed his hands excitedly, and then muttered in his mouth: "The European emperor is possessed, and the non-chief retreats ......"

【Open】

As the words fall, the key suspended next to the treasure chest is automatically inserted into the keyhole of the treasure chest.

After a spin, the chest slowly opened, and an object glowing white appeared.

Before Zhou Wen could see what it was, a prompt box popped up in front of him.

He took a closer look, [Congratulations, 10 ...... for getting a bio-type N99 mask ×]