But they know the rules, even if the doctor and nurse agree, they can't break the rules; waiting outside is okay, it's not as if they don't trust the process.

Yang Ping arrived at the ward, followed by a dozen doctors. In fact, this kind of treatment is just like an infusion, there isn't any special operation to see, but everyone still likes to follow along.

The K biological agent was delivered, and after verification by the nurse, the original saline solution was replaced with the K biological agent. It drips like ordinary medication, requiring no special auxiliary medical equipment.

As the infusion line reopened, the K biological agent slowly entered Sisi's veins through the intravenous infusion method and then circulated throughout the body via blood circulation. Of course, it also penetrates the solid tumor lesions and quietly enters the interstitial fluid between cells, navigating the cell gaps, locating, penetrating, and killing tumor cells in a hushed process.

Thanks to excellent modifications, the confrontation between the K virus and the human immune system has become very weak, as it only targets tumor cells without causing adverse damage to normal cells.

After the infusion of the K biological agent, Sisi no longer needs to stay in the ward, afraid to move. She can walk around the hospital and periodically undergo various check-ups to dynamically assess the post-treatment effect.

Yang Ping reviewed all of Sisi's examination results, from admission till now. Since starting K therapy, her tumor lesions have been continuously diminishing. Although the initial treatment faced intense ups and downs, the overall direction has been geared towards the goal of cure.

During the research of this project, the system crashed, and Yang Ping completed this project entirely without system assistance. Of course, all the extensive knowledge he accumulated was acquired from the system.

"Professor, do you think this K virus is considered an adenovirus? You say it's an adenovirus because its function is completely related to a virus. But if you say it's not an adenovirus, its main structure is still a protein shell encapsulating nucleic acids. We've just modified its original structure, installing some special functional proteins on it," asked a doctor next to him.

Everyone was standing in the ward, watching Sisi's "infusion." In truth, there isn't much to see during an infusion, but they gathered around enthusiastically, even making the young girl a bit embarrassed. Despite having no adverse reactions, such an extensive team was still needed to "serve" her.

"Hasn't the name of the K virus already been changed? It's called the K protein complex. We just got used to calling it the K virus; it is no longer a virus, now entirely a new artificially reconstructed microorganism," Song Zimo responded to him, as Yang Ping was intently watching the hanging K biological agent.

"It originated from the modification of adenovirus, but it has completely diverged from the realm of viruses in terms of both structure and function. It's a new artificial species. Is a mule a horse or a donkey? It is neither; it's a new breed. The K protein complex's relationship to adenovirus is now greater than that between a mule and a horse," Song Zimo explained to them.

"Adenovirus is just the material we used, like assembling a drone with a motor, rotor, and scaffold. Can you say a drone is just the scaffold?" Lu Xiaolu made this analogy very well, vividly explaining the relationship between the K protein complex and adenovirus; in fact, the adenovirus simply serves as a scaffold.

On this scaffold, the research team installed numerous functional protein structures, some for recognition to identify tumor cells, and others for penetration to breach substantial physical barriers, such as capillary walls, some tumor membranes, and cell membranes—that's why it can reach internal parts of solid tumors.

There are also functional units that avoid immune attacks, enhancing survival rates within the human body. Most importantly, it carries the K factor, capable of triggering apoptosis within tumor cells, killing them.

"In the future, we'll use adenoviruses or other relatively harmless viruses as templates to create other therapeutic protein complexes. K therapy is not just a single drug or biological formulation; it will become a vast therapeutic system. I recall a famous scholar saying that, in the future, cell therapy will become the greatest specialty in medicine, capable of curing most diseases and eliminating many existing treatment methods. This isn't exaggeration; it's serious. I want to tell everyone that our K therapy will be a more promising treatment system than cell wall therapy. As you can see, cell therapy has made little progress in treating solid tumors; it's only suitable for hematologic tumors. Our K therapy can theoretically treat both hematologic and solid tumors as long as there are sufficient suitable K factors," Lu Xiaolu eagerly lectured these folks, some of whom usually got too deep in thought during class.

"I believe Professor Lu's statement because the K protein complex is much smaller than cell walls, able to perform various operations inside cells, so its future operating space will surely be much larger than any cell," another doctor said.

Sisi lay on the bed receiving the infusion, her eyes darting here and there, watching her brothers and sisters surrounding her. What were they doing, observing her infusion and then having a lecture meeting? Well, even if she didn't understand, she might as well listen.

"Viruses are much smaller than cells. A virus's diameter is at the nanoparticle level, while a human cell's diameter is at the micrometer level; the difference is hundreds to a thousand times. Cells can be seen with an optical microscope, but viruses can't be seen with an optical microscope; an electron microscope is needed," Sisi couldn't help but express her opinion.

"Yo! Sister, not bad at all. How come you know so much? Does your elementary school teach biology? Usually, it's taught in middle school, right?" a doctor teased Sisi.

Now everyone addresses Sisi as their sister, and she looks quite serious: "I checked the information. I used a computer to research and read some books. After all, this is all I know. Am I right?"

Song Zimo said, "You're right, that's the deal. It looks like Little Sister truly wants to become a doctor in the future."

Sisi said, "Of course, you all call me Sister, so it can't be fake. I definitely want to be a doctor in the future. Just wait, I will surely get into the eight-year program at Nandu Medical University."

"Oh, you know about the eight-year program?" a graduate student said in surprise.

Sisi retorted, "Many of you are in the eight-year program; how could I not know? You greatly underestimate children's intelligence. I know you don't have a girlfriend."

"How do you know?" the graduate student asked, blushing.

"That milk tea shop next to the hospital, I saw you a few times, and each time you only bought one cup," Sisi said.

She guessed correctly; this graduate student truly didn't have a girlfriend. If he had a girlfriend, even a potential girlfriend, how could he possibly buy only one cup of milk tea? Surely, he'd grab an extra cup for his girlfriend.

"You're a little rascal, so clever?" the graduate student said.

Suddenly, everyone fell silent because they noticed Professor Yang hadn't spoken at all. What was he doing? Song Zimo realized Yang Ping had been staring at that bottle of K biological agent, his gaze never leaving it.

Song Zimo also didn't know what Yang Ping could deduce by staring at the bottle, so he followed suit, and then everyone stared at the bottle.

The head nurse beside them felt uneasy being watched by everyone. Was something wrong with the bottle? She couldn't think of any problem; if there was an issue, Professor Yang should have indicated it. Why didn't he say anything?

Suddenly, everyone fell silent because they noticed Professor Yang hadn't spoken at all. What was he doing? Song Zimo realized Yang Ping had been staring at that bottle of K biological agent, his gaze never leaving it.

Song Zimo also didn't know what Yang Ping could deduce by staring at the bottle, so he followed suit, and then everyone stared at the bottle.

The head nurse beside them felt uneasy being watched by everyone. Was something wrong with the bottle? She couldn't think of any problem; if there was an issue, Professor Yang should have indicated it. Why didn't he say anything?

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