Unlike new applications in CH5 solution, organ freezing is an applied project. After the results of this project came out, it was not aimed at pharmaceutical companies, but at organ centers and hospitals. It needed a universal technical standard.
For example, the selection of blood substitutes, the flow rate and temperature of blood entering the heart and vessels, etc., every detail needs to be compared, selected and confirmed through numerous tests, and each selection confirmation requires huge data to support the demonstration. This kind of experiment is extremely test the level of a laboratory.
Rao was assisted by a supercomputer, and it took nearly four months for everyone in the laboratory to complete the preliminary data measurement.
"Li Zheng, the thawed heart cells are still intact, and the technical problem is not big, but the experiments at this stage show that simple freezing cannot keep the organ stored indefinitely." Liu Sichao took off his mask and said with a frown.
Li Zheng pursed his lips and quickly flipped through the experimental records in his hands. He and Liu Sichao were both masters in experimental manipulation. This experiment was done by the two of them, and the technical operation was almost perfect.
Li Zheng closed the experimental record in his hand and said, "Meng Jie, Zheng Guangye, the four of you will do it once and show us."
"Okay...Okay, Li...Professor Li!" Meng Jie was so excited that he felt much better.
Zheng Guangye also showed a hint of joy on his face. Since the conversation in the flower room, he went home and discussed his future development path with his family. After the project is over, he will leave the laboratory and join a ministry in Huajing.
Zheng Guangye clenched his hand holding the experimental notebook. Before leaving, he wanted to make something to commemorate his seven-year biological career.
"The computer debugging is completed, and the No. 1 liquid is ready."
"No. 1 liquid fills in, and the external interface controls the flow rate."
"Lu Keke, Jiawen."
"Okay, the temperature is rising, 20, 25, 30, 40, the temperature rises to 50, the optimal temperature is reached, and the external interface is opened."
"No. 1 fluid flows into the heart, the temperature is normal, the flow rate is normal, and the sensor is normal."
Half of the monitors of the supercomputer were installed in the laboratory, and the four monitors on the wall were densely flashing countless numbers.
Li Zheng and Liu Sizhao stood beside them, watching the movements of these four "little guys" without blinking, their frowning brows not loosening at all.
"The beating speed of the heart continues to slow down, Xiao Liu, highlight the heart data!" Sun Bin shouted loudly to Xiao Liu in the glass compartment next to him.
Xiao Liu kept tapping on the keyboard with both hands, and when he heard Sun Bin's shout, he raised his hand and gave him an OK gesture.
With the introduction of No. 1 blood substitute liquid, as well as changes in temperature and flow rate, the beating speed of the heart gradually decreased and gradually stabilized, keeping it at the minimum level that does not lose cardiac activity.
"These little guys are very good." Liu Sichao praised in a rare way.
Indeed, although they did not know how many times this experiment had been done in the past four months, it was all led by Li Zheng and Liu Sichao. It was the first time for the four of them to do it on their own, and it was already quite remarkable that they could do it to this level.
However…
The "beep beep" heart detection sounds an alarm, and the polyline above the screen flattens out at a speed visible to the naked eye.
"Heartbeat is down! Fast! Adjust the temperature and flow rate! Prepare the human body simulation environment! Fast!" The four people panicked when they heard the alarm sound. Even though Zheng Guangye reacted immediately, the data on the sensor was getting smaller and smaller.
"Beep..." A gentle beep sounded, the fluctuating line on the screen turned into a straight line, and the heart stopped beating!
The faces of the four were pale.
"Professor..." Sun Bin lowered his head.
Li Zheng's mouth curled slightly, but his face quickly turned serious, "Try again!"
The four of them were shocked, Zheng Guangye pursed his lips and said, "The computer is ready, do it again!"
After five repetitions, the four finally reached the thawing stage and carefully neutralized the liquid nitrogen to thaw the heart. The experimental results were the same as those of Li Zheng and Liu Sicong. The cells were not damaged, but the heart activity was also weakened during freezing. Freezing alone cannot achieve indefinite storage of organs.
"It's anti-corrosion. One less low-temperature anti-corrosion process!" Li Zheng said in a deep voice.
Hearing this, Liu Sichao nodded after thinking for a moment.
Despite knowing the missing steps in the technical process, the Ninth Lab tried countless existing low-temperature anti-corrosion formulations, none of which could meet the requirements of their experiments, in other words, their experiments stuck.
This card is stuck until 1986.
During this period, Liang Zhe flew over twice, because Li Zheng was still in the project research stage, and the two couldn't say a word at all. Li Zheng really felt that Liang Zhe didn't break up with him, and it was definitely true love.
In January 1986, Zhao Depei personally came to "warn" Li Zheng that he had been absent from school for a long time. Huaqing has a rule that no matter how big the professor is, one class a month must be guaranteed. The letter of appointment signed by Li Zheng and Huaqing also included this clause, but Li Zheng was confused by this project and forgot at all. This crop.
The leaders of Huaqing also devoted themselves to the establishment of the Huaqing Award, and they didn't care. No, after a little spare time, Zhao Depei came to the door.
Li Zheng rubbed his temples, "Okay, you can arrange the time." He replied.
So the next morning, Li Zheng stood on the podium in the classroom on the first floor of the teaching and research building.
The classroom was densely packed with people, and many people brought their own small stools to sit in the aisle of the classroom.
The people sitting in the first few rows were older, some were familiar and some were unfamiliar, probably the staff of Huaqing and other schools. By the way, the materials that Li Zheng sorted out and described in the last public class have been proofread by Huaqing University Education Press and officially published at the end of 1985.
It is listed as a designated book for biological laboratories by the Huaguo Research Institute, and the biology departments of many universities in Huaguo have also included it in the textbook list. This "Biological Research Guide" is also one of the important reasons why the classroom is full of people .
Li Zheng rubbed the watch on his wrist with a guilty conscience. Compared with the last time, he didn't prepare anything this time, so what should he say.
Looking at the neatly arranged notebooks on the desks of the first few rows of colleagues, Li Zheng squinted his eyes, he still had to say something.
What he is familiar with and has content, can be said on the spot without preparation now, then only the topic of "extending the storage time of organs" is currently underway.
"Our class today is discussing the current experimental project of the ninth laboratory, organ storage."
"I believe that everyone is familiar with this topic. After all, the dispute between UW solution and CH5 solution was very noisy last year. What I want to talk about today is the second stage of this project, the infinite storage of the heart."
The classroom immediately remembered the sound of rustling discussions. Although Li Zheng mentioned this concept as early as the Chicago TV station, and the domestic media also reprinted and reported it, ordinary people look at problems, and professionals look at problems. The depth is still different.
The experts and scholars in the front row realized the significance of this topic as soon as they heard it. The heart is the most sophisticated organ of the human body outside the brain. The success of the infinite storage of the heart means that organ storage will enter a permanent era.
"Professor Li, can this really be done with the current level of technology?" a middle-aged man in the second row couldn't help asking.
He is an associate professor of biology at Yanda University. Yesterday, he heard that Professor Li of Huaqing was going to take a class, and the biology department of Yanda suddenly exploded. The professors didn't even want to go to the class, and spent a whole day discussing whether they would like it or not. The question of going to Huaqing to attend classes.
Whether they want to go or not, of course they do, but Huaguo people love face, and Huaguo scholars are among the best among them. Although Huaqing and Yanda are brother schools, they are both in Huajing and one of the top universities in Huaguo. This competitive relationship is naturally indispensable.
They are dignified Yanda professors to listen to a Huaqing lecturer's class, which is too much of a loss! That's right, although everyone in Huaqing called Li Zheng a professor, according to his professional title, he was just a lecturer.
But don't go! How about that!
They also read the "Biological Research Guide". This book almost summed up the development process of biology from its establishment to the present. It lists the major experimental projects in the history of biology by category and analyzes its experimental process. skills, summaries.
This group of Yan University professors looked at it over and over again, saying that it has benefited a lot or underestimated its role.
In case that Professor Li Zheng is still hiding something, if the Huaqing group of guys really smack themselves and don't print and publish it in a book, then where are they going to cry, so they struggled for a day, these Yan Da professors still decided. Come to the class.
"Of course." Li Zheng said with a smile, "Now the No. 9 laboratory has achieved non-destructive freezing of the heart, and the storage time of the heart has been extended from the 72 hours announced by the American Organ Transplant Association to 168 hours, which is also a breakthrough in the history of organ storage. Sexual progress."
"Of course, there is still a big gap between 168 hours and unlimited storage, but the road always has to take the first step, right?" Li Zheng replied with a smile.
The discussion in the classroom is louder, 96 hours!
Professor Li spoke lightly, but the people under the podium knew what the 96 hours represented. The organ storage time has more than doubled, which means that countless individuals will benefit from it, as this technology regains newborn.
After a while of discussion, they quickly became quiet, and at the same time held their breath, listening to Li Zheng on the podium describe the specific matters of the laboratory project.