They came to the brain, but were stopped at the door.
What stopped them was a huge wall, which looked like a Great Wall, but it was not made of bricks, but made of a huge net.
[Blood-brain barrier: refers to the barrier between the plasma and brain cells formed by the walls of brain capillaries and glial cells and the barrier between the plasma and cerebrospinal fluid formed by the choroid plexus. These barriers can prevent certain substances (mostly Harmful) from the blood into the brain tissue.]
At intervals, there is a watchtower on the networked Great Wall, on which guards stand guard.
Guards in army-green uniforms, armed with long guns, keep an eye on all substances that are going to enter the brain.
Tang Yuan raised his head and narrowed his eyes.
[Glial cells: also known as glial cells, are widely distributed in the central nervous system, and the number of all cells except neurons is about ten times that of neurons in the central nervous system. It has the function of supporting and nourishing neurons, and also has the function of absorbing and regulating certain active substances.]
The transparent mesh Great Wall, Tang Yuan saw that there were many buildings like libraries, and these buildings were connected by another tree structure.
There were a lot of people in green clothes living in those libraries, who looked like research scholars.
"Who? The brain is important. No cell visits are allowed." The guard on the watchtower scolded.
Tang Yuan rubbed his chin, this is not easy, he almost forgot that there is a blood-brain barrier, most substances with high hydrophilicity and large molecules can't get through.
The material exchange here also relies on a carrier protein, and under normal circumstances, it is absolutely impossible for him to enter.
"What should I do? Do you want to try?" After Qi Zhi finished speaking, she rushed towards the netted Great Wall, and then she was stopped by the big net and bounced back.
Wang Tianyi looked at Qi Zhi: "You are such a big one, you will definitely have trouble getting through it, and—"
The guards on the watchtower had sensed their intentions and raised their guns to aim at them.
"Misunderstanding, misunderstanding, we just want to see if the wall is strong!" Wang Tianyi said with a smile.
"Neutrophils, macrophages, B cells and killer T cells, this is not a place for you to stay, if you don't want to die, leave quickly."
"It seems that we have to retreat." Qi Xiu turned around and wanted to leave, but was pulled back by Qi Zhi.
"Look at him, he hasn't moved yet." Qi Zhi pointed at Tang Yuan.
Tang Yuan stood there, as if waiting for something.
"He didn't give up, so there should be a way."
Tang Yuan did not give up, he waved his hands towards the inside, signaling the people inside to come over.
After all, the cells are already anthropomorphic, so this kind of operation is still possible.
Someone inside had already noticed Tang Yuan. He walked out of a library and arrived in front of the grid-shaped city wall.
"What's the matter, dude?" the scholar asked, tilting his neck. He was very puzzled. Under normal circumstances, no one would come here. Their library is connected to almost all neural intelligence networks, so as long as they stay in their brains, they can know everything.
"The world is at stake, don't you know?" Tang Yuan asked.
The scholar nodded. He couldn't be more clear about the situation, but since he was not on the front line, he couldn't personally experience the tragedy in his body.
As long as those viruses and bacteria don't invade the brain, there's room for mitigation.
"The invading viruses are very powerful and mutate very quickly, and soon we will not be able to distinguish them."
"Well, you are right, but all we can do is to constantly analyze new virus types and quickly formulate a response plan."
"It's too passive." Tang Yuan sighed. "We have to anticipate their actions in order to win this battle, and I have some clues."
"Well, we welcome people with ideas, but sorry, you still can't come in."
"I'm not going in." Tang Yuan replied. "If there is enough information, I can find out what it is, so I hope you can help me."
"What's busy?"
"I want you to show me all your memories of this disease."
"I'm sorry, you don't have permission to read this." The scholar refused and was about to go back.
"Wait, don't rush to leave so soon." Qi Zhi stood there, smiling leisurely. "We are all for world peace. Since he has a way to confirm the disease, why not try it first?"
Qi Zhi spoke in a gentle low voice with a touch of a mature woman, which immediately reminded Tang Yuan of those female anchors of late-night radio stations who also spoke with such a charming voice.
"But it doesn't comply with the regulations." The scholar stammered, mainly because the woman opposite him was too strong, and he couldn't refuse directly.
"You just say you want to read it yourself, and then bring it over and read it through the Great Wall. It's all the same. The regulations are dead, and they were created for talents." Tang Yuan spoke, and the other party was shaken. That means there is drama.
"But..." The other party was still not fully persuaded, even if there was Qi Zhi's constant persuasion, it was useless.
"Just please, just this time, everything may be too much for you, then you can bring whatever book you want, as long as the time is the closest."
"Okay." The other party answered happily.
Qi Zhi wanted to try harder to persuade him, but he didn't expect the other party to agree so readily.
But she didn't know that, out of her sight, Tang Yuan secretly grabbed the hat of the blue virus and shook it at the scholar.
"If you don't show it to me, I will try to find other things that can get in by myself?"
The scholar's face suddenly changed: "You... dare not..."
"Oh? Do you think I dare?" Tang Yuan stretched out his hand holding the blue hat towards the mesh structure. "Looking at the size, it's very convenient to get in."
This man had a smile on his mouth and gentle eyes, but the scholar just felt numb all over. He believed that this gentle man could do anything.
So what if he is a neutrophil in this world, as long as he wants to release the virus, he doesn't care about anything.
[When necessary, gentle negotiation is also a way to make the other party submit.]
[Remarks: Moderate negotiations combined with appropriate threats are outstanding.]
The scholar went back to get the materials, and came back after a while. He sat on the ground and looked at Tang Yuan outside the mesh city wall.
"Read it."
"... Gender: Female; Volunteer No. 001."
"Declaration: I voluntarily came to be an experimenter, and no matter what happens thereafter, I voluntarily bear all the consequences."
"At the beginning of the injection of the virus, I started coughing and sneezing. This should be an inflammatory reaction of the body when it is stimulated. They told me that there is no need to worry. As long as I survive this period, I will become the first to evolve. By."
"But it seems that the situation is getting worse and worse, but I have not given up hope, I have been persisting, and I have not lost my mind. I will definitely... become... the person who changes history..."
The scholar raised his head and shrugged: "The only relevant information is this, which is the medical records or diaries in 'our' memory."