The Legend of Harry Potter Schoolmaster

Jon Hart spent the next few days thinking about the plan.

How to take a hair from Snape, or a piece of tissue from him?

But all the plans were rejected by him one by one, because the risks were too great...

Snape was an extremely good potion master, and he probably knew more about "Compound Decoction" than he thought.

Want to steal part of his body?

Strictly speaking, it's not impossible... but as long as he shows a little clue, I'm afraid he will find out and guess the existence of Compound Decoction; and with the relationship between Snape and Dumbledore, he may have to do it in an hour. Went to Dumbledore's office to "talk".

That is simply to steal the chicken without losing the rice, and the blood collapses directly.

All the plans that came to mind were quickly rejected by Jon.

But it's not completely impossible!

Jon pondered, and there was another possible way... just a little troublesome.

But that is the safest way.

As soon as he said it, he took out a pen and paper and wrote a letter.

The letter was addressed to Mr. Robert Wilson, owner of the hardware store, 21 Winchester Road, Southampton; Jon, in Varian Wrynn's name, begged Mr. Wilson to help him buy something.

and mail it to Mr. Hart, Hufflepuff, Hogwarts High School.

...

Almost a week later, the owl appeared in the dining room carrying large boxes every now and then, and then threw the boxes to Jon.

"Who the hell sent you so many things?" Zacharis asked curiously.

"Just some gadgets for people who don't know magic..." Jon said vaguely: "A relative of mine sent it to me!"

However, whenever he received an email, Jon would find an opportunity to rush to the Room of Requirement on the eighth floor of the castle to install those things.

At the same time waiting for the opportunity to approach Snape.

...

A Potions class in late January 1993.

Snape spent the afternoon teaching them how to prepare a potion called "Sleeping Potion".

Jon and Astoria were the first in the class to complete the configuration, and Snape was the last to evaluate them as usual... In order to prevent the potion from volatilizing, he deliberately closed the lid of the cauldron.

As usual, Snape criticized almost every student in the class.

When the get out of class was about to end, he turned his attention to Jon and Astoria in the first row.

After striding over, he stretched out his hand and opened the cauldron.

Looking at the clear blue liquid in the cauldron, he just nodded slightly.

In the potions class for more than half a semester, Jon and Astoria hardly missed, and he was used to it.

Without saying a word, Snape was about to put the lid on the cauldron again...

"Professor, let me do it!" Jon said quickly, holding out his hand.

At this moment, the spatula in his hand scratched lightly on the back of Snape's hand inadvertently.

"I'm sorry, Professor..." Jon stood up in a panic.

Snape withdrew his hand with a cold expression, and the touch just now was very light, without bleeding, leaving only a faint white mark.

"Sit down!" Snape glanced at him coldly, and ordered, "Mr. Hart, didn't I tell you that after configuring any potion, the knives must be retracted?"

"I'm so sorry...I just forgot..." Jon hurriedly sat down and explained.

"Five points off Hufflepuff!"

"Now, get out of class is over..."

...

"What the hell did you think just now... It's unbelievable that Professor Snape only deducted five points... I thought you were going to be locked up..." As soon as Snape left the classroom, Astoria hurriedly joined Come over and said with a closed face.

"Sorry, I was a little distracted just now." Jon smiled bitterly, and at the same time carefully put the scraper just now into a crystal bottle with red liquid.

"Are we going to the restaurant together?" Looking around, Astoria asked in a low voice.

"No, I still have something to do!" Jon hurriedly packed his things and rushed to the eighth floor of the castle.

...

On the eighth floor of Hogwarts Castle, opposite the tapestry where the troll stick beats Barnabas.

"I need a freezer...I need a freezer..." Jon, who had reached the room of Requirement, said silently in his heart.

After walking through the wall three times, when the brass-colored handle appeared on the wall, he hurriedly pushed the door and entered.

The current Room of Requirement is full of ice cubes... A few boxes of rum are placed in a pile of ice cubes. Obviously, he is not the only one who has arrived here.

Jon couldn't help shivering, then ran to the left, removed a large block of ice, and took out the bottles and jars hidden in it:

DMEM cell culture medium;

Gibco fetal bovine serum;

PBS buffer;

kanamycin;

Ampicillin...

These were the reagents Jon got rid of which Mr. Wilson had ordered for him.

Bottle after bottle of biological reagents were taken out by Jon, along with a box of ice cubes.

Since it was too risky and difficult to blatantly take away part of Snape's body, he could only do his own thing... Cultivate Snape's cells into tissues through laboratory methods.

As these reagents were taken out one by one, the entire Room of Requirement began to undergo earth-shaking changes!

Little by little the ice cubes disappeared, and then the Room of Requirement became a greenhouse maintained at around 37 degrees... the best temperature for cells to grow.

There were also some instruments in the hut, which Jon ordered a few days ago and brought them secretly.

Including microscopes, centrifuges, incubators... After several days of hard work by Jon, this place has become a humble microbiology laboratory.

There is also a small diesel generator.

Jon carefully took out Snape's epithelial cells that he had collected before, which he had secretly scraped on Snape's hand with a spatula before.

He put it into the culture medium (the liquid in the previous crystal bottle) the first time after collection.

The medium was discreetly centrifuged at 800 g, and the supernatant was removed; the cells were then re-added with medium and serum.

Because there was no way to ensure sterility, Jon had to add a thousandth of antibiotics to the culture medium.

After a while of simple processing...

Finally, Jon carefully placed the cell flask in the incubator.

Leaving the Room of Requirement, he can only hope that all goes well!