from my heart [last days]

On the upper floor of the clinic, there is Yuan Mingqiu's small laboratory with more complete equipment than Xie Congxin imagined.

The two samples brought out from the power station were put in glass bottles with cork caps that Xia Lingling brought. Girls like to play with them. The airtightness is not very good, and they have rotted. Once the caps were opened, Yuan Mingxia He held his nose and jumped three feet away, shouting: "Fuck, what is this? A biochemical weapon!"

Yuan Mingqiu glared at him.

Yuan Mingxia immediately stared back at him not to be outdone.

Xie Congxin put on a mask and gloves, moved the samples into a petri dish, and said, "One group is cultivated, the second group is refrigerated at 0 degrees, and the third group is heated and boiled with an alcohol lamp, and compared after 24 hours."

Yuan Mingqiu nodded, "What else?"

Xie Congxin took out another small bottle of blood sample, poured it into a test tube, and put it into a small centrifuge.

Yuan Mingqiu asked: "Whose sample is this? Is it also an infected person?"

"Well," Xie Congxin replied, "Take the serum and try it."

Yuan Mingqiu had no doubts.

He sent the samples to the refrigerator downstairs. Yuan Mingxia glanced at Pei Ze who was standing in the corridor outside. The other person's gaze passed through the glass window and fell on Xie Congxin the whole time. The meaning of protection was self-evident. Yuan Mingxia Xia Guai didn't like it, taking advantage of Yuan Mingqiu's absence, he walked back to Xie Congxin's side in small steps, and asked in a low voice, "Are you really a couple?"

"Yes," Xie Congxin is adjusting the frequency of the centrifuge since the play is done, it is inevitable to do a full set, "so I suggest you stay away from him."

"Why, I'm not interested in other people's boyfriends." Yuan Mingxia pouted.

Xie Congxin turned on the switch of the machine, then changed hands to prepare the precipitant, "Then what do you want?"

"I'm just curious," Yuan Mingxia seemed to follow her with a small tail, "You are the first couple I've met."

Xie Congxin ignored him. After weighing on the balance, sodium tetraphenylborate was dissolved in water.

Yuan Mingxia found a chair and sat down, resting her chin and watching his slender fingers pressing on the transparent test tube, tilting at an angle of [-] degrees, slowly pouring the liquid into the beaker, and the measurement was accurate at the end.

In fact, his brother often does these things, but he is not as pleasing to the eye as Xie Congxin.

Even if half of the face is covered by the mask, the exposed half is still exquisite, and the movements on the fingers are as elegant as bartending, just looking at it makes people feel refreshed, Yuan Mingxia sighed: "My brother said you He is the youngest academician of the National Academy of Sciences, tell me not to think about it, I can't steal it from you."

Xie Congxin smiled casually, what does this have to do with whether he is an academician or not?

"What are you laughing at?" Yuan Mingxia leaned forward a little, winked and whispered, "Hey, you should be the one below, right? Have you done it?"

"..." His words were startling, Xie Congxin stopped what he was doing, and glanced at him sideways.

"You must have done it, did you last night? How does it feel to do such a thing?" Yuan Mingxia's eyes are black and white, and her body is thin and weak, because of her posture, a beautiful collarbone is exposed under her collar , "I heard that the one below will be very painful for the first time. Captain Pei looks like he should be in good size. Does it hurt?"

He has always been the most impatient with children, Yuan Mingxia is also within the range, Xie Congxin put the test tube back on the shelf, slowly took off the mask and gloves, "Have you tried it yourself?"

Yuan Mingxia said sadly: "Of course not, I'm just an adult! I finally went to university, but it turned out that the end of the world will be over within a month. How can I have a chance to try..."

Xie Congxin had a half-smile, suddenly bent over and approached him, put his fingertips on his chin, and exhaled softly: "Oh, then do you want to try it with me? Make sure you don't feel any pain."

"??!" Yuan Mingxia was shocked, "You you you you you..."

"Me?" Xie Congxin squinted her eyes and curled her lips, "I'm the one above, if you want to try, I don't mind."

"…………"

Yuan Mingxia turned his head to look at Pei Ze outside, as if he saw ten thousand mud horses galloping across the grassland above his head.

Pei Ze keenly noticed that the way Yuan Mingxia looked at him had changed.

It was a bit of resentment, a bit of confusion, and a bit of regret that iron can't be made into steel. It's so complicated that it's hard to describe it, but it's completely different from yesterday's. It's true that he has no interest.

On the contrary, for Xie Congxin, he seemed a little afraid, a little yearning, and a little bit courteous. At dinner, he carefully picked up vegetables for him, with a little worship in his eyes, occasionally biting his lips, a little bit shy.

The play last night was not so much about helping him out of the siege as it was Xie Congxin's whim. As soon as he went up the stairs and was out of Yuan Mingxia's field of vision, the two of them naturally let go, and neither of them said a word tacitly. Naturally, he didn't prepare the corresponding script for the next day. I don't know what Xie Congxin said to Yuan Mingxia, which caused his attitude to change so suddenly.

After eating and packing up the samples, on the way back to the hotel, Pei Ze asked, "What did you say?"

Xie Congxin smiled: "It's just for small talk, Captain Pei is interested?"

"...No." Not interested, just felt that something was wrong.

"Don't worry," Xie Congxin said, "I won't pester you anymore."

He did stop pestering Pei Ze, but turned around and started pestering Xie Congxin.

Not only did breakfast come early in the morning, but he even offered to help Xie Congxin with his laundry.

The washing machine in the hotel is a bit old, but the washing machine in the clinic is the newest type of drum. Hearing this, Peng He leaned forward, "Will you wash ours too?"

Yuan Mingxia gave him a supercilious look: "I can't wash that much, so just rub yours yourself!"

The treatment gap is not obvious, and the speed of change is not unpleasant.

After breakfast, I went to the clinic. The results of the virus culture comparison experiment had already been obtained. Low-temperature refrigeration had no obvious effect on the containment of the virus. Once the temperature rose, the virus resumed its high activity.

Similarly, high temperature cannot completely destroy the activity of the virus. The nucleotide chain exists in the cell and is difficult to destroy. Once the outer shell protein is cooled, it can be quickly rebuilt. Conventional heating at 40 degrees can only kill [-]% of it.

"How about a higher temperature?" Yuan Mingqiu asked, "Infrared or ultraviolet?"

Xie Congxin took the serum sample after precipitation and separation, "Is there an irradiator?"

Yuan Mingqiu shook his head, "There must be none in the town, I have to go to the hospital in the city to find it."

"Forget it, there is a lipid envelope on the surface, and the capsid is high-density, so it should be difficult for rays to penetrate."

Yuan Mingqiu watched him divide the serum into three equal parts, and put a group of virus samples under the microscope. After adjusting the focus, he used a dropper to take samples and drop them in.

Why is the serum of an infected person added to the virus sample?

He originally thought that Xie Congxin was trying to detect the remaining number of white blood cells in the infected person's blood or something.

Xie Congxin stretched out his hand and said, "Physical saline."

Yuan Mingqiu was very cooperative, and handed him the dropper. Xie Congxin diluted the sample that was too dense after swelling. After the microscope was magnified [-] times, the individual virus was a huge dark purple spherical shape, like an earth, and the antibodies in the serum reversed. Like orange-red meteors, they are trying to wrap the virus from all directions. The two sides are like two evenly matched armies, beating drums and shouting, fighting and fighting. It is not yet known who will win the final victory.

Yuan Mingqiu held his breath, Xie Congxin's expression was so serious that he couldn't help becoming nervous just watching from the sidelines.

Nearly 3 minutes later, Xie Congxin pressed the camera on the microscope and quickly took a few photos.

Yuan Mingqiu asked softly, "How is it?"

"Let's talk when we go back to the hotel," Xie Congxin straightened up, took off the memory card, put the book in a sealed bag, stuffed it into his pocket, raised his head and smiled at Pei Ze who was standing outside, and said, "It's good news."

The two armies confronted each other, and the antibody won a complete victory.

On the computer screen, the antibody balls wrapped the virus shell, stretched out a strip of tiny tentacles, intertwined with each other, and densely covered the surface of the virus with pits and pits. The picture looked a little disgusting.

Peng He couldn't understand this, and touched the goosebump on his arm, "What the hell is this?"

Xie Congxin didn't answer. He sat on a chair, crossed his legs and drank coffee leisurely. Yuan Mingqiu's eyes widened, and he had been staring at the still picture for 30 seconds.

"Brother?" Yuan Mingxia poked him.

"..." Yuan Mingqiu took a deep breath, his voice trembling, "Neutralization... can you restrain it?"

"Further biological experiments are needed to verify that the simulation environment is too poor," Xie Congxin said lightly, "but it is very likely. With such a coverage rate, the surface structure of the virus has changed, and it should be difficult to adsorb proteins and can be peeled off."

Yuan Mingqiu's eyes turned red, and he grabbed Xie Congxin's hand excitedly, "Where did the serum come from? How could there be antibodies!"

Coffee was spilled on the back of his hand, Xie Congxin sat up a little bit, frowned and wanted to take out a tissue, but Pei Ze was one step ahead of him, pressing the tissue on the back of his hand and wiped it off for him, then took the cup, and pulled Yuan Ming away for Xie Congxin Autumn's hand.

Xie Congxin chose to release this group of photos in front of everyone, and his intention is self-evident - he no longer intends to hide it.

Sure enough, Xie Congxin said, "It's my blood."

Yuan Mingqiu stood up abruptly, staring at Xie Congxin's face with an expression as if he wanted to swallow him alive.

"I was bitten by an infected person once, but I didn't get infected." Xie Congxin calmly leaned a little closer to Pei Ze, afraid that Yuan Mingqiu would get too excited.

"So..." Yuan Mingqiu just stood there in a daze, "So you..."

"So I have antibodies," Xie Congxin said, "and my antibodies can have a certain inhibitory effect on the virus in other people's bodies. It is feasible to make antiviral serum."

Yuan Mingqiu actually cried, "You..."

It was tears of joy, unable to utter a complete sentence, and the others gradually recalled it, and all of them showed great surprise——

Xie Congxin really has antibodies;

Xie Congxin's antibody is himself.

So both Chen Hai and Chongcheng are looking for him, so he can't save Zhou An...

"You asked me if the end of the world will end, I can't give you an answer," Xie Congxin closed the computer screen, and said slowly, "But if you need something to persevere, is this enough reason?"

That's enough, Yuan Mingqiu thought, from now on, no matter how many years it will take to make the serum, no matter how hard life is, he will continue to live with Yuan Mingxia for this possibility.

The disaster is like an eternal night where the dawn cannot be seen, but the existence of Xie Congxin is undoubtedly a cluster of fire in this dark night, which will guide him, and even all the surviving people in this world.

At this moment, he thought of the person who rushed into the clinic on the first day of the earthquake, and also thought of his mother who was bitten through an artery;

I thought of Yuan Mingxia's cry in the chaos, her mother's eyes that could not be closed when she fell to the ground, and the warm blood splashed on her face when the scalpel was inserted into her heart.

There are many ordinary people like him in the world, holding on to a breath in the sudden upheaval, but their hearts are already facing collapse.

He must thank Xie Congxin, thank him for being willing to tell himself.

——There is still hope, don't give up easily.