In an eight-day continuous experiment.

Huang Fan discovered a problem that the two of them had ignored before, or a phenomenon that had not been discovered due to insufficient experimental data.

In addition to those that divide constantly, there are also brain cells and cardiomyocytes that do not divide.

Since cells do not divide, the vital essence does not work on brain cells and cardiomyocytes.

Although benefiting from the "youthful vitality" of other cells, brain cells and cardiomyocytes have also gained a lot of benefits, and their life span has been extended by 20~30%.

It's just that this improvement ratio has completely failed to keep up with the improvement of other cells.

A barrel determines the amount of water, not the longest, but the shortest.

The same goes for the lifespan of living organisms, no matter how long other cells in the body can live, if the brain cells, which are key cells, do not live long, the organism can only brain die.

Masami Honda, who didn't notice this problem at first, also felt very strange.

Logically speaking, if the life-like essence cannot improve the lifespan of brain cells and cardiomyocytes, it means that the animals that eat the source fruit will not get two or three times the lifespan of the animal.

However, the reality is the opposite, the animals on Yongri Island that eat the source fruit have achieved an increase in lifespan, and the longest increase is 2.8 times, and those animals have not been brain dead or heart failure.

This situation is contrary to the results of the experiment.

That being the case only means that there are other things that affect the lifespan of these animals.

Huang Fan and Da Dahai re-analyzed the composition of the pulp of the source fruit, but found nothing.

Until Jiang Zhiren reminded him that the answer might be in the kernel.

Huang Fan and others, who suddenly became enlightened, looked at those animals and found a rule, among those animals that have gained longevity, small and medium-sized animals generally have no obvious increase in lifespan.

The animals that have a significant increase in lifespan are those that are huge, and the characteristic of these animals is that they can swallow a fist-sized source fruit in one bite.

This means that these animals are swallowed with the pits.

……

Cut open the purple core of a source fruit, the inside of the core is similar to the kernel of a pecan, and the huge sea lists all the components of the kernel and the kernel.

First, some of the same ingredients as the Blue Star creatures were eliminated, and the rest of the ingredients were separated by them.

After some experimentation, they narrowed it down to three, and then through live injection experiments, they finally settled on the substance.

This is an organic substance extracted from the kernel, which is called "cytoactivin".

In animals injected with this cytoactivin, juveniles and adults have little effect. In the elderly, the situation is completely different.

When cytoactivin enters the senile body, it activates the division mechanism of brain cells and cardiomyocytes, which causes brain cells and cardiomyocytes to divide into new cells.

This is equivalent to the regeneration of the brain and heart, especially with the cooperation of the vital essence, so that the brain and heart can divide new cells almost without damage.

"Unfortunately, cytoactivin is also resistant." Huang Fan sighed.

Jiang Zhiren shook his head and smiled: "Don't be too greedy, it's better to eat the rice one bite at a time." ”

Huang Fan, who was mentally exhausted, was stunned for a moment, and then relaxed: "It's my magic barrier." ”

Cytoactivin can only stimulate those cells that do not divide, thereby briefly turning on the division restriction of these cells.

Huang Fan calls this process "temporary cancerization", because brain cells and heart muscle cells stimulated by cytoactivin will be like cancer cells that have been released from the limiter.

It's just that cytoactivin is a temporary restrictor, while cancer cells are a permanent restrictor.

……

The research on vital plasma and cell activin is advancing rapidly.

Not only the efficacy, dosage, side effects, and drug resistance of the two compounds are studied, but also the process of industrial synthesis.

If the vital essence and cell activin can really act on the human body, the more than 3,000 trees on Yongri Island alone will not be able to meet the needs of new humans, and an industrial synthesis process must be sought.

The progress of research is very fast, and hundreds of thousands of cases have been done in animal experiments alone.

The life agent concocted by the vital essence, the cell activin concocted the rebirth potion, in which the rebirth drug has obvious side effects, and the injection will cause brain memory loss.

This is a difficult problem to solve, the brain cells themselves store a lot of information, and during cell division, there is a loss of information, which is a very normal situation.

Huang Fan and the others can only choose a compromise solution, that is, to back up their memories through a biological computer, and after completing the regeneration of brain cells, they can re-inject consciousness and memories into the brain.

……

Inside the biochemistry laboratory of the Shipwreck Observatory.

Jiang Zhiren hurriedly walked to Huang Fan's side and handed over a document:

"Good news."

Glancing at the document, Huang Fan stopped what he was doing: "The Science and Technology Commission approved it so quickly?"

Jiang Zhiren explained: "There is no way, our other technologies are advancing by leaps and bounds, and there is no good news in terms of life science and technology, and now it is estimated that it is to boost people's hearts!" ”

"Then let's prepare for the first phase of clinical work as soon as possible." Huang Fan commanded while the iron was hot.

"No problem." Jiang Zhiren nodded.

As soon as he wanted to go out, the huge sea stepped into the laboratory, and Jiang Zhiren was curious and stable: "Why are you sad?" The experiment didn't go well?"

"It's not going well." After saying helplessly, Da Dahai handed Huang Fan an experimental report.

Looking at Huang Fan, who looked at the experimental data, his brows furrowed after a while, and he asked in surprise: "There is no way to synthesize the life essentia?"

The huge sea stall sighed: "Whether it is chemical synthesis or the forcible splicing of nanorobots, there is no way to synthesize. ”

In the experimental report, the nanorobot splicing method, which had been invincible before, did not work for the first time.

There are only 1,566 atoms that make up the life essence, and even if they are forcibly put together, all the elements are exactly the same, and as soon as the nanobot is unspliced, the molecular structure will automatically collapse.

"It's hard now." Huang Fan had a headache.

The life activin is different from the cell activin, which can solidify the age of the organism, while the cell activin only has an effect on those elderly people whose brain cells are in the terminal stage.

In addition, cytoactivin can also be used to treat Alzheimer's disease, so there is no other application.

And the life essentia is something that most people need, except for minors, because the body is not fully developed, the life essentia cannot be used.

Jiang Zhiren thought for a while and suggested: "Since it can't be synthesized artificially for the time being, let's try to clone ......."

"I've tried, but it didn't work." Huge Hai grabbed his hair and replied.

"Listen to me." Jiang Naoto knew that there might not be a way to clone the fruit directly:

"I mean cloning the source tree and then simulating the living environment for semi-natural production."

After thinking for a while, Panghai understood that this was the best way now, and before there was no way to solve the artificial synthesis, he would first carry out semi-natural cultivation.

Huang Fan also agrees with this plan, we still have to be flexible in doing things, and we can't blindly stumble to the end.

didn't take down the huge sea of life essence synthesis, and took over this matter: "Cultivate the source tree and leave it to me!" ”

"Hmmm! OK. Huang Fan has no opinion, anyway, he has to be busy with the first phase of clinical affairs recently.