The dog's eyes were lying on the hospital bed, looking like they were being slaughtered by others, and the jar was broken, looking at Liu Tianqi and said,

"Dean Liu, if there is any danger to my life, is it all up to me?"

Liu Tianqi smiled and said, "No, I believe that totipotent stem cells have been very safe to apply to the human body after three phase of experiments. ”

Zhang Han walked over with a syringe and smiled at the dog's eyes, "Don't worry, if you die, it can be regarded as a dedication to the medical community, we will give you a beautiful funeral, and give you money to cheat you every Qingming Festival, and you don't lose money." ”

"Hush." The dog's eyes snorted disdainfully, and stretched out his middle finger to Zhang Han, "Don't worry, if I dedicate myself to the medical community, I will definitely pull you down." ”

Zhang Han didn't say anything, opened the packaging of the syringe, pulled out the totipotent stem cells, drained the air, and then handed the empty bottle to Liu Tianqi, who carefully packed it into a tray like a treasure, handed it to the nurse, and repeatedly told him to keep it properly.

Dogeye stretched out his arm, "Brother Han, come on." ”

Zhang Han nodded, picked up the syringe and slowly injected the totipotent stem cells into the position of the nerve defect in the dog's eye, and the drug was given very slowly, less than ten milliliters of medicine, and slowly injected it at a rate of one drop per second.

The various instruments in the intensive care unit made a regular ticking sound, Wang Kexin checked back and forth very carefully, Davis held a small notebook in his hand and recorded the data of various instruments, but Liu Tianqi and the nurses had no work to do, and looked at them very worriedly.

"How? Do you feel anything? Zhang Han asked.

Dogeye shook his head, probably too bored to wait, and stretched out his hand, "Give me a cigarette, it's too boring." ”

Zhang Han smiled and shook his head, "No, nicotine is a stimulant that can affect vital signs. ”

The dog-eyed stared impatiently at the ceiling and stopped talking.

Zhang Han looked at Wang Kexin with a side face, and still maintained rapid administration in his hand, "Heart rate, body temperature, blood oxygen saturation." ”

Wang Kexin glanced at the instrument, "Heart rate 77, body temperature 36." 9. Oxygen saturation arterial 98, venous 75. ”

Zhang Han nodded after listening, all the data is fine, and the dog eye does not show any signs of discomfort, five minutes have passed, and he can already make a judgment, the dog eye does not have any allergy to totipotent stem cells.

But the speed in Zhang Han's hand still did not increase, and still maintained the original speed, 1 per minute. 7 ml.

All the nurses and Liu Tianqi present were surprised at why Zhang Han's hand muscles could maintain the accuracy of a machine, and some even pinched the stopwatch, but they were even more shocked, and found that there was no difference in the dosing measurement of each second, and it was hard to imagine that a human could actually make such a subtle movement in his hand so accurately.

After a few more minutes, the syringe was completely empty, Zhang Han pulled out the syringe and handed it to Liu Tianqi, the dog eye pressed the cotton wool in his hand, and looked at his arm,

"That's it?"

Zhang Han nodded, "It's over." ”

Dogeye asked again, "Why can't I move my hand yet?" I don't feel it at all. ”

Wang Kexin came over and explained, "The motor plexus of the hand needs to be reconstructed through stem cells, and the time is about two weeks, and if you eat the elixir, you will not be able to move so quickly." ”

Dog-eyed pouted, "It's going to take two weeks." ”

Zhang Han glared at the dog's eyes, you are content, how many people want to get an all-round stem cell without a chance, you are still too long.

Wang Kexin said with a smile, "If it weren't for your order this time, I wouldn't have given totipotent stem cells to anyone." ”

Zhang Han also smiled, "I Zhang Han remembered your favor, and I will have the opportunity to return it to you in the future, and you will never suffer." ”

A soft smile appeared on Wang Kexin's face, like a spring breeze, "I don't dare to let the chairman return the favor, if you are really sincere, invite me to a meal another day." ”

Zhang Han readily agreed, "Okay!" Yes, but I'm leaving the day after tomorrow, and if you want to eat this meal, you only have two days. ”

Wang Kexin's expression darkened, but he still kept a smile, "I have to leave immediately, the laboratory in Eastern Europe is inseparable, but I didn't promise to let you go, this meal, I'm afraid I can only talk about it later, you can't escape." ”

Zhang Han grinned, "With a beautiful woman to accompany me, how can I escape, as long as I am free in the future, you can choose the time and place." ”

Dogeye and Davis looked at Zhang Han's back, and scolded in their hearts, this guy can shoot a girl at any time, he is really powerful and has nothing to say.

Liu Tianqi saw that they were done, and immediately instructed the nurse to collect all kinds of vital sign data just now, and the monitoring was not interrupted for a second.

Davis said, "How long does the allergy of totipotent stem cells occur? ”

Wang Kexin replied, "12 hours! If there is no allergy during the administration period, it means that the probability of allergy is reduced by 78%, if there is no allergy within three hours, the probability is reduced to 9%, and after 12 hours, there is no possibility of allergy at all. ”

Zhang Han looked at Wang Kexin and asked, "Is the activity of totipotent stem cells only 12 hours?" ”

Wang Kexin nodded, "Very correct, if it is the body's own totipotent stem cells, the activity can be maintained for several months without decay, but after the critical CO2 fluid extraction method is used for extraction, many of the preserving substances of the stem cells are seriously damaged, resulting in a greatly reduced activity cycle, which is the biggest problem we encounter at this stage, and the bioengineering laboratory in Eastern Europe is trying its best to find a solution." ”

Zhang Han lowered his head and thought about it, he didn't speak for a long time, Wang Kexin felt a little strange, why did he suddenly stop talking, he just wanted to call Zhang Han, but was stopped by Davis.

whispered to Wang Kexin, "Wang, don't disturb the chairman, he is thinking about the problem." ”

Wang Kexin nodded, and waited with Davis, at this moment Zhang Han's brain is running rapidly, if you look closely, you will find that a layer of fine beads of sweat oozed from Zhang Han's forehead.

I don't know how long it took, Zhang Han raised his head and maintained a very satisfied smile on his face.

"Smack."

snapped his fingers and said to Wang Kexin, "After you go back, ask your team not to use the critical CO2 fluid extraction method, but try the ultra-low temperature condensation extraction method, because I suspect that when it is supercritical, carbon dioxide destroys several groups of amino acids in the totipotent stem cell preservation substance, and the fourth kallinoprosin causes the activation of active zymogenase to fail." The enzyme fourth kinase is very fragile, and the amount of carbon dioxide can easily destroy it, causing the activity limit of totipotent stem cells to not exceed 12 hours. ”

Liu Tianqi and the nurses frowned tightly, they could barely understand the two extraction methods in the front, but what Zhang Han said later activated zymogenase and the fourth kininotinase, they were confused, it was even more difficult to understand than the book of heaven, and they had not even heard of it at all, let alone knew what it was for.

Wang Kexin looked at Zhang Han very suspiciously, "Can carbon dioxide destroy the prozyme of the active activating enzyme, causing its activation to fail, affecting the activity?" ”

Zhang Han no longer had that kind of hangerlang being a ruffian, and said very seriously, "Of course not, this is also the reason why you have been wandering in a dead end."

Carbon dioxide itself does not directly destroy the enzyme that activates the enzyme genase, but it does destroy the production chain of the fourth kallinogenase, and the activity reaction of the fourth kallinopetinase is a positive feedback effect, which is closely related to the activation of zymogenase, so it leads to the problems you encounter. ”

After listening to this, Wang Kexin felt like his head was about to explode, it was really difficult to accept that he and his team, the problem that had not been solved for several months was actually explained clearly by Zhang Han so easily, is this still a human being, and he also respected the young chairman, it seems that age really does not mean everything.

With his age and achievements, the outside world has already called him a genius, and it is hard to imagine what kind of sensational results would be if Zhang Han did these things.

Wang Kexin was ecstatic and took out a small notebook to write down what Zhang Han said, suddenly felt that something was wrong, and asked again,

"But we've tried other extractions before, so why hasn't the results changed? In some cases, the activity is even lower, not even more than an hour. ”

Zhang Han shook his head, "I'm not an immortal, before I get your specific experimental data, it's hard to say the reason just by guessing, but as long as you follow my ideas and find a problem between activating zymogenase and the fourth kinase, I believe you will soon get the answer you want." ”

Wang Kexin smiled and nodded, "These chairmen! I'll do what you say when I get back. ”

Zhang Han waved his hand, "Don't thank me, I'm just returning you a favor, since you can't eat the food in your mouth, you have to do something to compensate you, right?" ”

Wang Kexin was like a little girl, quite unreasonable, "One yard is one yard, don't think that you have helped me with this, you can be exempted from inviting me to dinner, I will owe it to you first, don't think about it." ”

Zhang Han smiled happily, "A manly man, how can he be dishonest for a meal, let alone eating, even if he eats guns, I will accompany him to the end." ”

Although this thing is talking big, the little stars in Wang Kexin's eyes flashed, and the nurses were the same, covering their red faces and smirking at Zhang Han.

"Ahem......" Liu Tianqi coughed and motioned for them to pay attention.

Wang Kexin came back to his senses, looked at the time, and said to Zhang Han, "I want to go back to the laboratory in Eastern Europe immediately to verify your conjecture." ”

"Oh, king, you are still young, don't work so hard, or God will not bear to see it." Davis advised her.

Wang Kexin smiled, "Davis, thank you for your concern, but I really feel like I can't wait for a second, my team and I have been struggling for this problem for seven months, can you understand?" ”

Davis nodded helplessly, "As a medical scientist, I understand. ”

Zhang Han saw that she was so anxious, and she was embarrassed to be reluctant, and said to Liu Tianqi,

"Lao Liu, lend me your car."

Liu Tianqi nodded, "No problem, it's in the drawer of my company, I'll get it for you." With that, he turned around and ran out.

Zhang Han said to Wang Kexin, "Let's go, I'll take you to the airport." ”

Wang Kexin nodded, an excited expression like a little girl appeared on his face, similar to the cold medical scientist before.