Supreme Pharmacist System Chapter 4: Task completed

Zhou Wen followed the experimental steps and pipetted the supernatant.

"Blowing and beating" is an academic term, which is to use a test tube gun to extract the supernatant, and then blow it out, the purpose is to fully stir the supernatant in the test tube.

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

Fifteen minutes later the centrifugation is complete.

Extract the supernatant of group A to the electrophoresis machine next to it, and add it from the gel well.

Close the lid of the electrophoresis tank, select the electrophoresis voltage and direction, turn on the power switch, and start electrophoresis.

Followed by group B, the supernatant was also extracted, added from the gel hole of another electrophoresis machine, and the electrophoresis was also run.

Next is a long wait.

The computer will compare the extracted DNA with the mouse genes in the "NCBI Gene Bank" in the United States one by one, which will take at least 6 hours.

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

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

But Zhou Wen doesn't have time.

I went and caught a white mouse and first observed it with the Eye of True Sight.

What he didn't expect was that what appeared in front of him this time was an introduction, [Rat name: Mouse, mouse variant. Gender: Female. Mouse age: 11 months. ]

"Hey, why did you see this?" Zhou Wen turned his head to look at Lin Jiayi, who had his back turned to him. The scene he had seen before reappeared in front of him.

[Name: Lin Jiayi. Gender: Female. Age: 24. Occupation: Biology student. body condition:? ? ? Mental state: ? ? ? ]

He thought of the method of observing DNA, his eyes narrowed slightly, and soon, the picture in front of him began to become clearer and clearer...

"Fuck...Fuck..."

In his eyes, the white lab coat on Lin Jiayi's upper body slowly turned into a fibrous tissue, spreading and increasing... Continuing forward, it was a white chemical fiber fabric.

The pores of the chemical fiber fabric became thicker and thicker in front of the eyes, and finally passed through this layer of chemical fiber fabric and turned into a black cotton fabric.

Next is the keratinized layer of the epidermis, 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 scene in front of him. He recovered 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 sterile operation table next to it, and Zhou Wen's reflection could be clearly seen on it.

Lin Jiayi asked with a smile: "Hey Zhou Wen, you are so kind to help Shi Lei do experiments, aren't you just staying with me?"

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

Since Qu Fangfang left, Lin Jiayi may feel that no one in the laboratory can threaten her appearance, so she is more and more arrogant in her speech.

Of course, Lin Jiayi looks pretty good. She needs a face and a body. The small white lab coat is stretched tight.

It's a realistic group, all thinking about finding a handsome, rich and handsome boyfriend.

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

Lin Jiayi said with a big smile: "It doesn't matter if you don't admit it... Forget it, let me tell you one thing, I already have a boyfriend, and it's too late even if you want to chase me now."

Zhou Wen turned around and snapped the mouse's neck. While opening his stomach, he smiled and said, "Congratulations on getting off the list. Tell me, what's the situation on the other side?"

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

While Lin Jiayi was talking, Zhou Wen paid most of his attention to the mouse in his hand.

He found that when he extracted bone marrow from a rat's thigh, he could already see the DNA strands.

Now it's much easier to handle. He can more intuitively see the possible problems in the DNA extraction process.

It soon became apparent to him that a large amount of DNA fragments was lost during the low osmotic flushing process.

I don't know if it is caused by the problem of low osmotic fluid concentration?

Fortunately, it does not affect the extraction of genes, and the concentration problem will be studied later.

Next is the counterweight centrifugation.

Zhou Wen's centrifugation test one by one.

Soon he found the reason for the failure of group B extraction, which was a problem with the DNA extraction process.

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

Under normal circumstances, this is impossible. There is a difference between the left-hand extraction and the right-hand extraction. It may fail if the centrifugation is more than a second, and the temperature is higher and lower. It will also have a great impact.

Because DNA is invisible to the naked eye and cannot be touched, novices can only explore possible problems through repeated experiments. That is to say, relying on "experience".

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

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

…

The time passed quickly, and it was already 5:30 pm in the blink of an eye.

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

Zhou Wen, who was "mixing glue", said without raising his head, "You go first, I'll be fine right away."

Lin Jiayi didn't notice that there was a layer of guinea pig corpses piled up in the waste bin next to her, she nodded and said, "Okay, then I'll go."

"Um..."

The electrophoresis analysis was not completed until 7:30 p.m.

After comparison, it was found that the extraction of group A was successful, while group B was unsurprisingly, the data was seriously unreasonable, indicating that the extraction really failed.

Zhou Wen looked at the data chart, and the corner of his mouth couldn't restrain a smile.

The task required 6 gene fragments, and in the afternoon he extracted a total of 8 strains. Among them, 3 strains were obtained after electrophoresis analysis, 1 strain was obtained after electron microscope observation, and the other 4 strains were identified by naked eyes.

At this moment, a soft voice sounded in my ear, like a voice actress.

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

After Zhou Wen was stunned for a moment, he was overjoyed and immediately opened the pharmacist system.

On the blue property board, a prompt box pops up, which reads [Do you want to submit the task immediately? Yes/No]

Zhou Wen chooses [Yes]

[Ding! Mission completed ~IndoMTL.com~ Now the rewards will be distributed...Congratulations on getting 100 subject experience points and 200 points. ]

After the experience is distributed, a proposal box pops up again, [Do you want to open the box now? Yes/No]

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

"God bless, open 1 million... No, 10,000 will do. It's not enough to pay 1,000 yuan."

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

Today is March 19th, and the 100 yuan will last until the beginning of next month.

In fact, when he came to school a year later, he had two thousand dollars on him.

As a result, the phone was accidentally broken, and I spent 1000 to buy a third-hand 7P from my student, and then recharged 600 yuan of meal cards. I bought some things in bits and pieces, and I only have 100 yuan left. .

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

As soon as I finished choosing, a dark wooden textured treasure chest popped out in front of me, with intricate patterns engraved on it, and an ancient key suspended beside it.

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

【On】

As the words fell, the key floating next to the treasure chest was automatically inserted into the key hole of the treasure chest.

After spinning around for a while, the treasure chest slowly opened, and an object shining with white light emerged.

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

He took a closer look, [Congratulations, you got a biological N99 mask × 10...]