"Don't think you're not talking about yourself, I'm talking about everyone! In the future, every one of you will have human lives under your hands! ”

The people below were silent. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

"Didn't you just train in the military? Why are they all like this? Orders are forbidden, orders are forbidden, do you understand?! ”

"Hmph, those people in the school know how to mess around, where are the traditions of the military school thrown back then!"

Zhong Cheng said, his eyes widened, and he looked at Yang Tian.

"What's your name!"

"Yang Tian."

"The first time, even if you don't know, there will be a next time, and the usual points will be deducted directly!"

"Keep going to class!"

Zhong Cheng's temper was really strange and irritable, and after a class, there were several people who were punished for standing.

Yang Tian didn't get caught again, but he didn't listen to the lecture much, he just operated this experiment in the experimental teaching system a few hours ago, and the ppt took a few looks, which was exactly the same as the system taught.

Since it is the same content, there is no need to waste time, Yang Tian is now thinking about how to gain experience as soon as possible.

Yesterday's random task inspired him that it is not necessary to cure diseases to gain experience, and the so-called "popular science" can still be.

However, if you want to popularize science, you must first have a deep understanding of relevant knowledge, otherwise you will not be misleading, and the system will definitely not admit it.

"Alright, that's it, now let's start experimenting in pairs."

Zhong officially finished the last page of PPT and glanced at the audience.

This year's class of students, compared to when they were still in military schools, is really incomparable, look at how many people were punished by themselves in the back! And this Yang Tian in the front row!

On the surface, I'm staring at my PPT, but in fact, I'm in a daze, and I think I can't see it!

Those two have so deep dark circles, they must have stayed up late yesterday to play games! What the hell did the Academic Affairs Office do, didn't they all say before that they would disconnect the undergraduate dormitories from the Internet, and their own words are not good now?

The theory has been finished, and now it is time to start the experiment, and everyone suddenly moved.

After all, it was the first time to do the experiment, everyone was a little flustered, Zhong officially talked a little fast, and some basic experimental skills were directly ignored because he thought that everyone knew the foundation.

"Eh, what's the first thing to do? Academician Zhong's aura is too big, I patronized and listened to the lecture carefully, but I didn't remember ......"

"Who remembers how to use a pipette gun? How do you choose this range? ”

"Which liquid do you want to take first?"

There was a mess all around, but Yang Tian and Han Bing were calm.

"Will you do it?"

Yang Tian looked at Han Bing.

"Hmm."

Han Bing nodded.

Sure enough, a good student like Han Bing will preview before class, which saves Yang Tian a lot of trouble.

"I'll go get the reagents, and you go prepare the equipment."

Yang Tian said hello to Han Bing and walked towards the crowded podium, like this kind of hard work, he should do it himself.

Today's experiment was for DNA extraction and identification, using an E. coli solution prepared in advance.

To extract plasmid DNA from E. coli, the first step is to allow the cell wall and membrane of E. coli to be lysed to release the contents.

The school provides a complete set of kits, which are reagent sets specially configured by pharmaceutical companies in accordance with the experimental requirements in consideration of the time constraints of scientific researchers.

There are two kits in a laboratory, but there are nearly 30 people, which is naturally not enough, but fortunately, most of the students are still confused and don't know what to do.

Back on the experimental table, Han Bing had already adjusted the pipette gun, installed the disposable pipette head, opened the bottle, took the liquid, and the action was standardized and extremely efficient.

Yang Tian took the opportunity to take the bacterial solution with the reagent to the side, there is a vibrating machine, as soon as the power is turned on, the test tube is put up, and it will be shaken in a few seconds.

As soon as he turned his head, Han Bing was already waiting to pinch his watch next to the ice bath.

A wonderful sense of tacit understanding rose between the two, out of familiarity with the experimental procedures, the two did not even need to turn the book or read the ppt, when one person operated, the other person must have prepared the equipment and reagents needed for the next step.

The chaos of the crowd was in strong contrast with the orderliness on Han Bing Yang Tian's side, Zhong Cheng was a little surprised, glanced at it, pursed his lips, but didn't say anything.

After five minutes of ice water bath, 200 μL of solution II was added, and at this time, the others gradually stepped into the norm under Zhong's formal guidance and began to add solution I.

Given that Yang Tian and Han Bing's speed was about five minutes faster than the others at the beginning, they didn't need to make orders with others at all, they had enough ten test tubes and then took the next step together, always taking the lead, and the gap was getting bigger and bigger.

"There's one last step."

Han Bing took out a small centrifuge tube containing the test solution from the centrifuge, while Yang Tian already had the pipette gun and clean centrifuge tube in his hand.

Carefully avoiding the precipitate below from Han Bing's hand, sucking up the supernatant, transferring it to a clean centrifuge tube, and then discarding the pipette head, Han Bing naturally reached out and took the pipette gun.

The fingertips touched, and Yang Tian was stunned.

The frost on Han Bing's face melted for a moment, and Yang Tian seemed to see her blushing, and when he looked closely, there was nothing.

In 0.5 seconds, the fingers of the two people touched and separated, and their eyes looked away.

"Click, click"

The amount of liquid dispensed from the pipette changes with the rotation of the gears, and the hearts of boys and girls seem to change subtly.

Add twice the volume of absolute ethanol, place the centrifuge tube in the refrigerator at a constant temperature of -20 degrees, and the experiment is finally over.

Next, it's half an hour of waiting, waiting for the DNA to settle down.

The two of them sat back in their seats in front of the bench.

Yang Tian looked at the flustered classmates, a smile curled up at the corner of his mouth, and when he turned his head, a smile bloomed on Han Bing's face.

Suddenly, like a night of spring breeze, thousands of trees and pear blossoms bloom.

The hair swept in Han Bing's ears with the breeze, and the delicate face seemed to be shrouded in a layer of light under the sunlight, and the neck was so slender and smooth.

The lake, which had not fluctuated for a long time, suddenly began to ripple.

There must be a reason behind a person's character, Han Bing obviously looks so good when he smiles, but he has to keep a straight face every day, why?

Yang Tian suddenly had the idea of understanding Han Bing deeply.

Zhong Cheng stood on the podium with his hands in his hands, looking down at everyone in the laboratory, his eyes involuntarily lingering on Yang Tian and Han Bing.

Yang Tian looked at Han Bing silently, and there was a flash of light in his eyes.

"Eh!"

An exclamation came, and in Yang Tian's blind spot, the reagent in the hand of the girl with a ponytail accidentally took off, and the transparent liquid crossed an arc in the air, heading straight for Han Bing's face.

At the critical moment, time and space changed speed again, the woman's scream was elongated in her ears, and the liquid in the air doing parabolic motion was almost stationary, Yang Tian glanced at it while reaching out to pull Han Bing.

On the brown reagent bottle, it was written: Chloroform!