I Have A Super USB Drive

“Human life is limited, everyone has birth, aging, sickness and death, but does anyone know why we have birth, aging, sickness and death?”

On the podium, a very young professor said slowly that the sound echoed through the sound in the spacious large classroom.

“As everyone knows, the unit of life is the cell. Every one of us here is split from a small fertilized egg cell.”

“A change Two, two to four, four to eight…”

Under the stage, Chen Chen squeezed his chin, turned his gel pen in his right hand, and stared at the projection screen boredly.

“Cells will also age and die. Newly dividing cells continue to replace apoptotic cells. This is the secret of our continuous growth.”

“However, this division is not Infinite.”

“In 1965, Professor Hayflick of Stanford University discovered that human cells are impossible to replicate themselves more than 57 times, and each cell will die after 56 replications.”

“It’s like, there is a counter in the cell, which determines when the cell will stop dividing and when the person will grow old…”

“In theory, human cells can divide up to 56 times According to the calculation of the cell division cycle, the human limit lifespan should be around 120 years old, and this theory is called…”

“pa ta!”

Just listening When he was fascinated, Chen Chen suddenly slid his finger and flew the gel pen out and fell under the table.

Chen Chen immediately bent over and reached out to touch the ground.

“en?”

Just when his head was lowered below the table and bucket, inadvertently, a dark light came into his eyes.

Don’t ask why the light still has black. At the moment of bending down, Chen Chen did see a black light.

He looked subconsciously.

It is a long strip of things, completely black, it is stuck under the table bucket, and is embedded in a hidden groove.

So, after picking up the pen, Chen Chen extended his arm again and digged towards that position.

With the slightest effort, only a sound of ka-cha, the dark thing was successfully pulled down.

“The student who is under the table over there, please answer”

But at this moment, the professor’s voice suddenly came from the stage.

“Pu chi!”

There was a low laugh from the dorm buddies behind him.

Chen Chen got out of the table quickly, flushing with embarrassment.

He looked at the professor who was still laughed, then looked down at the textbook, and then he stumbled and said, “Sea, Hayflick limit?”

“Please sit down. “

The professor pressed his hand and asked Chen Chen to sit down.

Lecture continues.

“On both ends of the DNA, in the presence of a kind of’telomere’, this kind of thing plays a vital role in cell division.”

“It Responsible for keeping the chromosomes intact. Every time the cell divides, the telomeres become shorter. When the telomeres are too short to protect the gene structure, the cell will inhibit growth, stop copying, and enter aging.”

” This is the Hayflick limit.”

Speaking, the professor turned around and quickly wrote the six words “Haflick limit” on the blackboard.

Chen Chen sighed in relief, sitting down again, taking advantage of the professor’s turning around and writing, he quickly picked up the thing in his hand and glanced at it.

emmmmm_

This glance made Chen Chen completely disinterested.

It turns out that the black thing is not something else, but a USB flash drive.

Different from the USB flash drives on the market, the length of this USB flash drive is much longer than that of ordinary USB flash drives. It is twelve or three centimeters long and looks like a carbon rod.

Only the USB interface exposes the fact that it is only a U disk.

Apart from this, the entire U disk is completely integrated, completely black, and even trademarks and memory logos do not exist.

However, for the sake of the cool style, Chen Chen finally put the USB flash drive into his trouser pocket and waited for the dorm to study.

At this time, the professor continued to lecture: “With the current level of technology, the cells impossible breakthrough Heflick limit, but we can also bypass this problem in other ways…”

Speaking, the professor once again wrote five words on the blackboard:

Hela immortal.

“Everyone will definitely think, if there is a way to prevent telomeres from wearing out, can our cells live forever?”

“The answer is yes! “

The professor excitedly added the words “HeLa cell line” under “The Immortal HeLa”.

“The Hela cell line is a cell line isolated from human cervical cancer tissue in 1951, and its contributor is Herita Lax.”

“Researchers It was discovered that not only did the cells collected from Lacus not die, but showed signs of growth, and the number of cells doubled every 24 hours.”

“Later, it was discovered that the reason for the immortality of these cells was caused The RT tumor virus of cervical cancer. The gene of this virus can change the’switch’ of the lifespan of normal cells, thereby making the cells immortality and proliferating indefinitely.”

“In the years to come, HeLa cells were It is provided to research institutions throughout the Federation. It has helped scientists achieve cell cloning, has also been used to investigate the effects of nuclear radiation on the human body, and has been on a rocket flying to space to study cell proliferation under weightlessness…”

“According to data from the medical and biological database, as of this year, there have been more than 65,000 papers related to HeLa cells, and more than 50 million tons of HeLa cells have been cultivated…”

“Therefore, there is a common sense that everyone knows for later generations-cancer cell lines are’immortal’. As long as there is a suitable culture environment, it can divide indefinitely.”

Here, many students in the audience began to applaud spontaneously, which is a tribute to that contributor.

“Of course, if we humans use this’switch’, it is the way to die!”

The professor turned the topic and suppressed applause.

“After all, if the division cycle of our cells within the body is disrupted and cannot age on time, it will turn into a malignant tumor, threatening our lives!”

” We humans are constantly advancing on the road of pursuing the truth. As early as the period of clan society, the average lifespan of humans was less than 20 years old, and by the Middle Ages, the average lifespan of humans had advanced to 40 years old…”

” With the advent of science, human civilization has completely entered a period of rapid development. In just a few decades, the per capita lifespan of the Earth Federation has approached 80 years old!”

“But is that enough?”

p>

“Even if human beings develop to the extreme, they are still 120 years old as Heflick’s limit said, far from reaching the level of immortality, what should we do?”

paused, professor Continue to say.

“So, the turning point is coming…”

“In 2002, this’switch’ was finally found, three people including Cambridge University professor John Sulston A genetic regulation mechanism called’programmed cell death’ has been discovered.”

The professor once again wrote the words “programmed cell death” on the blackboard and drew a circle again.

Ka-cha sounded, because the fingers were too hard, the chalk suddenly broke.

“This discovery shocked the entire medical community because it believes that cell death is a physiological and active’suicide’, like a programmed procedure!”

The professor opened his hands, “In other words, we think that aging is a natural process, but in fact it may be a genetic defect! If we can repair this defect, we can hope to overcome aging and gain immortality !”

The audience suddenly whispered.

Like a brand new door was opened, Chen Chen eyes shrank, repeating those two magic words with a voice that only he could hear.

“Eternal life?”

“Eternal life…”

“Therefore, as a major of biological science, it is the most promising gene repair Defective generation.”

The professor showed an expectant smile on his face, “Or you can say that you are the generation closest to immortality in the history of mankind!”

At this point in the course, It’s almost over.

The silver-haired professor took the handkerchief and wiped his sweat, and concluded with anticipation and sigh:

“I have to say that we humans are still alive in the vast sea of truth. I dont know anything, maybe even the unattainable dream of immortality is just the 1st step in the pursuit of truth…”

“But anyway, the future belongs to you…”

“Okay, class is over!”

bang bang bang bang…

The audience suddenly burst into applause.