I Have A Super USB Drive

Two days later, Level 20 freshmen ushered in the first final exam of their college career.

Different from high school, college final exams are generally not at all too difficult. They are all basic sub-questions, and they all depend on students’ mastery of knowledge points.

In addition to professional compulsory courses, students of the School of Biological Sciences must also take the exams of “Bioethics”, “Linear Algebra”, “Inorganic and Analytical Chemistry”, “Natural Science”, “Organic Chemistry”, and “Advanced Basic compulsory courses such as Mathematics, College Physics, and Introduction to Biology.

After a few non-stop exams, the students per capita were dizzy and eyes blurred. I dont know what year it is today.

But for Chen Chen, its not at all. Others need to include cheat sheets for exams. However, Chen Chen has already mastered dozens of textbooks. Even if he goes directly to the postgraduate entrance examination, he is sprinkled with water, let alone The final exam.

With several consecutive exams, Chen Chen has maintained the record of first handing papers, and he has also established a reputation as a student in the second class of the student.

After all, many people turn in after seeing Chen Chen fill up the exam papers, and when the invigilator Teacher picks up Chen Chen’s exam papers when they are bored, they all look surprised, not that kind The look of being so angry that he was so angry that the error rate is obviously not high.

So, after another exam, Li Bo and Zhou Jie forcibly drag Chen Chen back to the dormitory and conduct an unspeakable secret transaction.

At the request of Li Bo and Zhou Jie, Chen Chen had to copy the answers to the multiple-choice questions to both of them every time after they answered the questions. Chen Chen fought for the whole semester.

After signing this unequal treaty of power loss and humiliation, each time the two look towards Chen Chen, they have a complex expression, but when they arrive in the examination room, the complexity and change To face Savior’s eagerness and piety.

In the midst of this pain and eagerness, Li Bo and Zhou Jie secretly vowed that they must study hard in the next semester and strive to stand up as a serf before sophomore year to sing.

After several days of dizzy examinations, finally, the freshmen of Shanghai Jiaotong University ushered in the first vacation of their college career, and countless students who had left their hometown cheered and embarked on the journey home.

As the campus gradually became deserted, after Chen Chen and Wang Wei sent away Li Bo and Zhou Jie, they arranged a meeting place with Xia Yin to prepare for the experiment.

In an empty teacher room, Wang Wei was looking at the thick experimental materials, and Chen Chen opened a textbook on cell biology.

Although Chen Chen’s expression is very casual, but every time a page is turned, all the knowledge on that page will be permanently imprinted in Chen Chen’s mind, and he will never forget it.

After a while, there was a brisk footstep from outside the corridor, and then a girl with long hair in a shawl appeared at the door.

The girl has a pair of bright eyes, clear and clear. When she sees the two in the classroom, she smiles lightly, and the girls unique youthful breath overflows.

“You are…”

Looking at the girl walking into the classroom, Wang Wei quickly stood up and said in surprise, “Little elder sister, are you Xia Yin?”

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“Hello, I am.”

Although I did not wear those black-rimmed glasses, I changed to a pair of contact lenses, and even painted makeup, but these details are in Chen Chen’s brain It’s the same as not existing.

With Chen Chen’s brain supplement, even if the woman in front of her is restored to an undressed form, it is soeary.

“Why is this dress up?” Chen Chen pretended to be surprised.

“After all, its a holiday. I thought its not too much to squeeze some time to clean up?” Xia Yin pretended to be annoyed. It’s the kind of rich…cough cough cough!”

Wang Wei just wanted to speak, he realized something and coughed frantically.

After introducing the two to each other separately, Chen Chen led the topic to the topic, “This time, there are three experiments that I temporarily planned, all of which are related to autologous stem cells.”

Speaking, Chen Chen took out a thick printed material from his schoolbag and handed it to Xia Yin, “Stem cells, a type of cell with unlimited self-renewal ability in the human body, can differentiate into at least one type. The progeny of cells.”

“For example, hematopoietic stem cells can differentiate into red blood cells, white blood cells, platelets, etc.; skeleton mesenchymal stem cells can differentiate into bone cells, chondrocytes, muscle cells, adipocytes, etc., “

“The stem cells of a person within the body are working everyday. The hair grows continuously, and the nails grow. Everyday all there are new cells to replace the aging cells. The source of these new cells is the human within the body. Kind of stem cells.”

“And my first experiment is about the therapeutic experiment of neural stem cells on brain injury.”

Chen Chen explained, “Neural stem cells, as the name implies, can A type of adult stem cells that repair nerves, and the principle of surgery is: After implantation in the human body, it will stimulate the bodys own stem cells to automatically secrete cell growth factors, a type of small molecular protein with a wide range of biological activities, to repair brain nerves.”

“And stem cells are divided into’self’ and’alien’. As the name suggests,’self’ is stem cells that originate from one’s own body, through the extraction of their own stem cells, the growth of the outside world, and then injecting into oneself within the body, this stem cell derived from itself does not have compatibility issues, avoids transplant rejection, is the best choice.”

“In this experiment, we need to create a brain damage model, so use SD rats are better than Kunming mice. After all, larger animals are also easier to handle.”

Speaking of this, Chen Chens expression gradually became more serious, “…As for the autogen needed for the experiment I will use two ways to obtain neural stem cells: 1. Artificial cultivation; 2. Extract from the replica within the body by cloning.”

“Clone?”

Wang Wei suddenly Surprised, lifts the head, “Do you want to conduct two batches of experiments to compare which neural stem cell is more effective?”

“That’s right, that’s it.”

Chen Chen snapped his fingers, “Although the outside world has always been blowing stem cells into a fascinating way, claiming to proliferate indefinitely, never aging, etc., in fact, if human stem cells can really proliferate indefinitely, they will age and die for who type? So I thought Look, since they are all autologous stem cells, they have been cultivated artificially Will there be any difference in efficacy between new stem cells and cloned new stem cells? “

“Then why not take an inducement method? “

Xia Yin sat in front of Chen Chen, squeezing her chin with one hand, “The experiment is finally or for humans. Since we want to compare the differences between stem cells, the stem cells formed by the directed differentiation technology are more important. Is it realistic? “

“The preparation technology of directed induced stem cells is too complicated and the cost is high. “

Chen Chen explained, “Moreover, this technology is immature, and the induced stem cells are at risk of tumor formation and immune rejection. “

“We can also try to clone other animals, such as rabbits. “Wang Wei proposed.

“Of course, you can try the rabbit, but dont forget about the cost and time. The pregnancy period of SD rats is 20 days, and the pregnancy period of rabbits is twice as long. Limited our experimental materials. “

“Well, I didn’t want to be thoughtful. “Wang Wei showed an apologetic look.

Then Chen Chen continued, “In the second experiment, I will destroy the spinal nerves of a few rats, make them paraplegic in a high position without endangering their lives, and then cultivate the same Stem cells, see if we can restore the action of rats in this way. “

“Then, it is the last experiment, and it is also the most important experiment I think…”

Chen Chen expression gradually solemnly, “The first two experiments are not No matter what, the whole world has done it, but the third item is different, and it is related to rebuilding the immune system. “