The three of them got off work early and went back to school, and on the way back, they went to the chemical store to buy some materials.

When he arrived at the laboratory, Ahn put the plastic pellets into a crucible and boiled them with an alcohol lamp, and the plastic pellets melted and gave off an unpleasant burning smell.

"Wear masks and open windows for ventilation!" Song Tingshen frowned, this smell can be poisoned.

But the plastic quickly burns into a black, coke lump that cannot be melted into a liquid, and it is impossible to pour it into the liver.

Guo Xiang was a little surprised, it turned out that this ordinary plastic was not good, she knew what materials Song Tingshen used in her previous life, but she thought it was just a random inspiration, other plastics could also be used, but she couldn't think of it, it seemed that she still had to follow the previous method.

"It doesn't look like it can be heated, and when it is heated, it will burn." "So how do you make them liquid?" ”

"You can add acetone and try it!" Guo Xiang said.

Song Tingshen glanced at her, "Chemistry is good!" ”

An Zehan withdrew the fire, put the new plastic pellets into a beaker, poured in acetone, stirred with a glass rod, and the plastic slowly began to dissolve, but it could not be completely dissolved, and there were many small particles, so that it could not reach those small veins when poured into the liver.

"The material is wrong." Song Tingshen said, "There should be a solubility parameter, and this plastic has a corresponding solvent. ”

But I don't know what it is, so I might have to ask a professional chemistry teacher.

"Mr. Song, I know a plastic that I might want to try." Guo Xiang said, in fact, she knew what Song Tingshen used in his previous life, but she couldn't say it directly, only if she missed it a few times, it wouldn't be so obvious.

"What?" An Zehan looked at her.

"Celluloid!" Guo Xiang said that this was what Mr. Song used in his previous life, and it is said that he was inspired when he watched a table tennis match, because celluloid is the main material for making table tennis.

"You can give it a try!" Song Tingshen said.

"I'll buy it right away!" An Zehan was eager to try.

I went to the chemical store again, but there was none, and then An Zehan went to the factory where table tennis was made and bought some from others.

"How did it take so long?" Song Tingshen asked.

"I went to the table tennis factory, and there is no other place to sell this material, people say that this is a synthetic plastic, which is specially formulated." An Zehan said excitedly, he felt that he was quite useful to be able to find materials.

"Then try again!" Song Tingshen nodded.

Put the celluloid particles into a beaker and add acetone, and a miracle happened, the rubber quickly dissolved at a speed visible to the naked eye, and soon dissolved into a cup of translucent and whiteish solution.

"It worked!" Ahn Zehan was excited.

"I'm going to get a liver." Song Tingshen also had a smile on his face.

I took a pair of livers and poured out the formalin solution inside, squeezed it slightly, squeezed out all the solutions in the blood vessels, and waited for the celluloid solution to pour in before it could completely enter the small blood vessels.

"Put on gloves, clamp them with pliers, and be careful with your hands." Song Tingshen gave his liver to Guo Xiang.

"Okay, Teacher Song!" Guo Xiang put on gloves, clamped the portal vein of the liver with forceps, hung down on a stainless steel tray, and motioned to An Zehan: "You can pour it in!" ”

"Hey!" An Zehan also wore gloves and carefully picked up the beaker and poured the solution along the portal vein of the liver.

The solution gradually entered the liver, Guo Xiang shook the liver, grabbed the vein mouth and shook it diagonally, trying to let the solution enter all the small blood vessels, so as to pour out a complete blood vessel specimen.

When it was almost over, the portal vein was tied up with a string and hung up.

"I wonder how long it will take to solidify?" An Zehan asked.

"Why don't you put it in the fridge?" Guo Xiang asked.

In fact, she only knew the main materials, and she didn't know the specific details, after all, she already had this thing when she studied medicine in later life.

"Put it in the refrigerator and hang it outside to dry and shrink." Song Tingshen said, "Don't go to the hospital tomorrow morning, just come here." It's not too early, so let's go back and rest first. ”

"Hey!" An Zehan answered, wrapped the liver in a plastic bag, and hung it on the grid of the refrigerator area.

The group went home together.

When Guo Xiang came to the school laboratory the next day, there were many people at the door.

Su Li greeted Guo Xiang in surprise when she saw her, "Boss, why are you here?" ”

They all heard about Guo Xiang's early internship, and they were all surprised, and they didn't ask her what was going on.

"Well, I'm coming to school today." Guo Xiang nodded, "What's wrong?" Guo Xiang pointed to the people gathered in front of the laboratory door.

"I heard that the laboratory is haunted, and a pair of livers have appeared in the refrigerator where the potions are stored. The classmates who came to get the potion were so scared that they almost fainted. Su Li said as she stood on tiptoe and looked inside.

"Huh?" Guo Xiang couldn't cry or laugh, he actually made this kind of oolong?

"I guess someone is playing a prank, right? Otherwise, how could there be a pair of livers for no reason, we are medical students, we can't believe in ghosts, ghosts, and gods. Su Li continued.

"Shall we report to the school leaders?"

"Or call the police directly!" Some classmates said.

Guo Xiang was taken aback, and hurriedly shouted: "Hey, let one go, let one go, I know what's going on!" ”

Everyone turned their heads and looked at Guo Xiang when they heard this.

"Who is she?"

"I haven't seen it!"

Everyone made a way, Guo Xiang walked in, and found a girl sitting on the ground, her face was pale, there were tears in her eyes, and two classmates were comforting her.

The refrigerator door was open, and half of the liver hanging from it was exposed.

"You misunderstood, this is not a prank, this is an experiment we did with Teacher Song, this liver must be stored in the refrigerator!" Guo Xiang hurriedly explained.

"But it wasn't there when school got out yesterday." The girl on the ground looked up.

When she came to get the potion, she saw a bag hanging in the refrigerator, and when she opened it curiously, she didn't expect it to be a pair of internal organs, which scared her a lot.

She was still a freshman, and she hadn't taken an anatomy class yet, so she was scared to death when she was so sudden.

"We only came here last night, so we weren't free in the hospital during the day." Guo Xiang sneered, he didn't expect such a big oolong.

"What's going on? What are you doing here? Song Tingshen's stern voice came from behind him.

"Teacher Song is here, Teacher Song is here!"

"Is it really Mr. Song's experiment?"

"Yes, Mr. Song is an expert in liver and gallbladder!"

Guo Xiang greeted him, "Teacher Song, it's okay, it's just that the liver was put in the refrigerator and scared the little girl." Guo Xiang smiled.

When the girl on the ground saw the teacher coming, she blushed and hurriedly stood up.

"Scared?" Teacher Song looked at the girl, "It's not okay to be so timid, you have to exercise more to exercise your courage." ”

"I—I'm a pharmacy professional." The girl said with a red face.

"Pharmacy majors also have anatomy classes!" Teacher Song's face was very serious, "Don't come to study medicine if you are not mentally prepared!" ”

The girl bit her lip and didn't dare to say anything when she said this.