Just as Yasuo was about to go back with Orochimaru, Jiraiya and Tsunade arrived panting.

Looking at the gifts in the hands of the two of them and the sincere smiles on their faces, a trace of warmth appeared on Orochimaru's pale face.

It feels good to have company...... He bowed deeply to the trio:

"Thank you!"

……

The land of the Flag Wood clan, in the hut of Orochimaru.

At the urging of several people, Orochimaru blew out the candles on the cake.

Jiraiya put his arm around Orochimaru's shoulder: "Stinky Snake Pill, look at your serious face just now, tell me what wish you made?" ”

Orochimaru pouted: "I hope it would be nice if that big idiot wasn't so verbose." ”

"What are you talking about, Snake Pill!"

Yasuo pulled the two of them who were born at odds, and said with a smile: "Don't make trouble, Orochimaru quickly open the gift!" ”

Tsunade also clapped his little hands and said, "Yes, hurry up and take it apart to see if it fits!" ”

Hearing this, Orochimaru let go of the dirty hand that Jiraiya had stretched out, and opened the first gift.

This is a delicate picture book, on which a young lady with a majestic headlight strikes a very shameful pose.

"How about it, Stinky Snake Pill, Uncle Ben is generous enough, right? This is the latest photo album of Miss Mie of Yuno Kuni! ”

Tsunade slammed his fist on Jiraiya's head, and shouted fiercely, "Jiraiya, you big pervert, what the hell did you send to Orochimaru!" ”

Jiraiya covered his head and shouted aggrievedly: "You see that Orochimaru is obviously very satisfied!" ”

The corners of Orochimaru's mouth couldn't help twitching, but he still put the only pornographic magazine in his life into his small box.

Tsunade's gift is much more reliable, and it's a kunai with exquisite workmanship.

"Orochimaru, this is my grandfather's relic, according to Grandma Mito, it seems to be a trophy from Takishinobi Village."

Although many years have passed, the sharpness of this kunai has not diminished, and it can be seen that such a quality kunai must have come from a great ninja.

After all, it must not be easy to fight with the first Hokage-sama.

After Orochimaru thanked him, he carefully wrapped the kunai and put it into his small box.

Finally, everyone's eyes fell on Yasuo's gift, the long gift box.

Orochimaru carefully cut through the tied red satin with a chakra knife, and opened the gift box, revealing a brand-new microscope of Doctor Biochemistry Heimerdinger.

Yesterday, after being reminded by Shuo Mao, Yasuo spent a full five minutes carefully selecting this gift for his best friend.

Orochimaru was slightly stunned, and Yasuo explained: "This is a 1600x microscope, and if it is combined with a fluorescent dye, the chromosomes can be observed. ”

Orochimaru had a happy look on his face, the 1600x microscope was much more powerful than the 400x microscope he used before.

"But what are chromosomes?" Orochimaru asked with a frown.

Yasuo thought for a moment and asked Tsunade, "Well, do you know anything about your second grandfather's experiments?" ”

Tsunade shook his head: "I only know that Grandpa Kazuma has developed a lot of ninjutsu, but for some reasons, many of them are now sealed in the village." ”

Yasuo nodded and said, "Well, I'm just hearsay in the family literature, chromosomes are probably the further development of cell research, and we may not be able to understand it until the knowledge level of the second generation of adults." ”

……

After a brief birthday party, Tsunade dragged Jiraiya to the Hearthstone Tavern to play cards.

Speaking of which, Tsunade's self-control for this fresh game is almost zero, and if it weren't for Mito's supervision, she would probably have to live in the Hearthstone Tavern.

"Yasuo-kun, can you tell us more about the cell?"

When there were only two people left, Orochimaru spoke again, and under the tacit understanding of getting along day and night, this kind of thing of family inheritance is not even an excuse for Orochimaru.

"Well, first of all, won't you ask me to give you a tour of your lab?"

"Of course, Yasuo-kun, please come with me."

......

Orochimaru's laboratory is on the second floor of the cottage.

Light microscopes, cell culture dishes, incubators, droppers, pipettes, in this humble laboratory, the equipment is surprisingly complete.

"It's all old stuff bought from the second-hand market."

Yasuo's fingers touched the mottled shells of several instruments and made this summary.

Orochimaru replaced the old equipment with the new 1600x microscope, and shook his head, "Occasionally, the data will be biased, but as long as it is proofread repeatedly, you can still get reliable results." ”

For Yasuo, Orochimaru is unguarded, handing a document to Yasuo, he pointed to a few petri dishes in the incubator and said: "Thanks to the gradual popularization of electricity supply, the cultivation of cells has also become stable, which is what I have been researching in the past few months." ”

"A Study Report on the Mutation of Mouse Kidney Fibroblasts Under Five Chakra Contaminations?"

Orochimaru put on a lab coat, put on a mask and latex gloves, and carefully took out the petri dish.

"Yes, after previous research, I found that fibroblasts seem to be more vulnerable to chakra contamination than epithelial cells and muscle cells, in other words, this cell is very plastic."

Yasuo noticed that the membranous structure composed of cells was visible to the naked eye floating in the culture medium of different colors, taking on different shapes.

"Excellent research!"

Yasuo sincerely admired, as a child, Orochimaru was able to do this, and he was indeed worthy of the reputation of the Hokage's first scientist.

The world of ninjas is truly amazing, and although it is not even a simple surgical suture technique, it has reached such a point in cell-level research.

"But I don't have a clue about the appearance of this mutation, Yasuo-kun, do you have any ideas?"

For Orochimaru, this is not a casual politeness, but he really trusts Yasuo's talent.

Although it seems that Yasuo is just the tail of a crane, including Keiko, there may be no one in this world who looks at Yasuo more carefully than Orochimaru, and no one knows Yasuo better than Orochimaru's unruly appearance, the pure and wise soul.

"My guess is that the level of cell differentiation is different, the more primitive the cell, the stronger its plasticity will be, and the cell after multiple differentiations, it becomes stable."

Yasuo pointed to the new microscope and continued, "Of course, this is just speculation, I don't know if it's right or not, the answer to this question is still on this new microscope, if you can observe chromosomes, a kind of information storage material that exists inside the nucleus, then you may be able to solve the mystery." ”

"Speaking of which, what do you think of the human body course in the ninja school?"

While Orochimaru was lost in thought, Yasuo asked a new question.

Orochimaru did not hesitate and replied directly: "Not only is it superficial, but there are also many loopholes. Over the past year, I have made this clear in my work of collating all the publicly available information. ”

Not long after the death of the second Hokage, Konoha's control over the data of cell experiments is still far less strict than in the future, and many of the materials that were later regarded as secrets are now semi-public, which is also the key to the start of Orochimaru's experiment.

Yasuo nodded and said: "Indeed, the human body is composed of various systems and organs, and is essentially a collection of various alienated cells, and the study of cells is the study of the nature of life, but now the village's opinion on this point is changing, although I don't agree with this view, but I hope you can avoid unnecessary trouble." ”

Orochimaru nodded, he was a sensitive person, and from some rumors, he also noticed that the village's reputation for this kind of experiment was becoming harsh.

"If, I mean, someday you need to do 'that' kind of research, let me know in advance, and I'll find you a suitable place." Yasuo finally added.

......

In the evening, Shuo Mao returned home briskly.

After a quiet dinner, Yasuo vanished.

Shuo Mao found Orochimaru with a puzzled expression.

"Where's Yasuo?"

"Looks like I'm going to the tavern."

"Isn't it your birthday today? Why didn't you celebrate? ”

"I've already celebrated, and today is really my happiest day!"

“？？？！！！”