"Yes, I'll immediately ask the people below to expand the scope of the survey!" Taketori nodded.

"By the way, how is the medical team's research on the 'Bone Vein'?" Rokuzawa asked again.

It's been another half a year since the last time they cleared out the empty ninja, and with the data they stole back from Shennong, the clan's research on the "Corpse Bone Vein" has improved a lot.

Hearing this, Taketori Shinsuke immediately took out another document and handed it over, and said happily, "Congratulations, my lord, just last night, there was a major breakthrough in the research of the medical class."

"They've finally figured out the root cause of the 'Bone Vein' defect."

"Oh!"

Liuze was suddenly overjoyed, hurriedly took the information, and quickly flipped through it.

Soon, he understood everything through the research report in hand.

The defect of the "corpse vein" is mainly due to the depletion of one's own life force.

Their bloodstain limit is different from the normal ninjutsu-type blood limit limit, and the "corpse bone vein" is an ability that originates from the mutation of bone cells.

And every time they use the "corpse bone vein", they have to catalyze the proliferation of bone cells.

Although it is said that because of this natural blood inheritance limiting ability, their bone cell life is far stronger than that of ordinary people, but it is also limited and cannot multiply indefinitely.

But everyone's ability to divide and proliferate is limited, so there will be aging and death.

Bone cells are related to human blood regeneration, which directly affects the metabolism of individual life, not just bone growth.

In this case, the frequent use of the "corpse bone vein" is equivalent to a large amount of bone depletion, weakening blood regeneration, hindering individual metabolism, and accelerating self-life depletion.

Therefore, the awakened "corpse bone veins" of the Taketori clan are all shorter-lived, but those who have not awakened have a more normal lifespan.

"I see, that's right!"

Putting down the research report in his hand, Rokuzawa let out a long sigh.

In this moment, he thought a lot.

For example, Konoha's original Hokage Senju Pillar.

He remembered very well that the first Hokage was born with extremely strong self-healing abilities.

No matter what kind of fatal injury he receives, as long as the other party still has a breath that is not broken, he can use that strong self-healing ability to recover as before.

This can be verified from the side of the fifth generation Hokage Tsunade.

I still remember that when the Five Shadows fought against Madara Uchiha, the opponent used Susanoo's light blade to pierce Tsunade's chest and abdomen with a single blow.

But even with such a serious fatal injury, Tsunade still survived with the self-healing ability of the "Baihao Technique".

Madara Uchiha once commented that Tsunade's self-healing ability can be compared to that of a thousand hand pillars, but the pillars do not need the assistance of surgery, and can achieve that level by their own ability alone.

The self-healing ability of the Thousand Hands Pillar can be seen.

However, just after the decisive battle between the Valley of the End and Madara Uchiha, Senju Tsuruma died not long after.

Originally, Rokuzawa was still very puzzled by this, with the self-healing ability of the Thousand Hands Pillar, if he couldn't recover on the battlefield, it was not impossible to die on the spot, but he shouldn't die suddenly after the war when he had enough time to heal himself.

Now, seeing the clan's research on the "Bone Vein", he suddenly understood everything.

In the battle of the Valley of the End, although Senju Tsuruma won, his opponent Madara Uchiha was not weak, and the two sides fought a lose-lose battle.

In the face of such a powerful opponent, he will inevitably use his self-healing ability frequently.

And the self-healing ability of the Thousand Hands Pillar is not without a price, he also needs to consume the number of cell proliferations, that is, the premise of consuming his own life force.

What's more, Senju Tsuruma is a ninja who has gone through the chaotic era, and he has already stepped on the battlefield at a very young age, and he doesn't know how many battles he has experienced and how many injuries he has suffered in his life.

In other words, when the Thousand Hands Pillar fought against Madara Uchiha, his lifespan was actually running out.

also

It is precisely because of that earth-shattering battle that the Thousand Hands Pillar has exhausted his already small vitality, although he still has a strong self-healing ability and can heal his injuries, but the overall cell has reached the limit of proliferation, so he will die young.

After all, human life is the result of the integration of all cells, not a small number of cells.

After packing up his mood, Rokuzawa came to a conclusion and said with a smile: "In this way, the solution to the defects of our 'Corpse Bone Vein' should be to increase our own vitality and fill the depletion of the ability of the 'Corpse Bone Vein'!"

"That's right, that's what the medical ninjas in the medical class said the same!" Taketori nodded.

"It's just that increasing one's own life force is easy to say, but it's actually not so easy to achieve!" Rokuzawa sighed again.

What they say about increasing vitality is not simply to increase cell activity, but to increase the upper limit of cell division, which is essentially an increase in lifespan.

As long as the lifespan is long enough, the division limit of bone cells will naturally be higher, and of course they will not have to worry about dying young if they use the "corpse bone vein" frequently.

"However, the medical team has come up with a preliminary plan and wants to ask for your opinion!" Shinsuke Taketori said again.

"Oh? Tell me about it!" Liuze suddenly became interested.

Unexpectedly, those guys in the medical class were just a blockbuster.

Not only did he understand the defects of the "corpse veins", but he also proposed a preliminary solution.

Taketori Shinsuke said slowly, "They say that the intercolumnar cells that the adults brought back contain powerful vitality in themselves, and if they can be integrated into the human body, they may be able to make up for the defects caused by the 'corpse bone vein'."

"That's a way to do it!" Rokuzawa nodded.

The strong self-healing ability of the Thousand Hands Pillar is premised on the consumption of his own life, which also means that his own physique is also different from ordinary people, otherwise it is not enough to use this self-healing ability regularly.

This is similar to their Taketori family, whose bone cells are far stronger than the average person.

If they were like ordinary people, they would only die faster if they used the "Bone Vein".

And the strong vitality between the Thousand Hand Pillars is all-round, not like them, but the bone cells are stronger than ordinary people.

Therefore, intercolumnar cells are also suitable for the optimization of their bone cells.

However, the overly strong vitality of the intercolumnar cells themselves is also extremely dangerous.

Because their own vitality is too strong, they are difficult to assimilate.

The result of difficult assimilation can lead to rejection, or regurgitation.

As far as he knew, Konoha in his previous life had conducted many human experiments with intercolumnar cells, and many experimental subjects just couldn't withstand the backlash of intercolumnar cells, and finally died, leaving only Yamato alone.

In addition to this, there is also the right hand of the former Shimura Danzo.

It was a prosthetic limb that had been cultured with intercolumnar cells and transplanted with countless writing wheels.

Those writing wheels transplanted on prosthetic limbs, in addition to Danzo's own purpose of wanting to use the power of the Uchiha, also have the effect of suppressing the regurgitation of intercolumn cells.

Because both of them are very powerful, Orochimaru creatively combined them together and used them to balance each other, but instead formed a unique balance that allowed Danzou to use that prosthetic leg freely.