Chapter 291 Come to My Room at Midnight Tonight

"Put on your hat!"

"Wear a mask!"

"Get in line, come and watch me wash my hands! - You! Pull up the mask! Cover the bridge of your nose! What about you!"

Gretel kept giving orders. Hey...it's not easy to take care of 24 little ones at once. Press the gourd and let the ladle float. He has not yet reached the seven-step hand washing method. Just wearing a hat and a mask requires him to correct it seven or eight times.

no way. Grete thought silently in his heart, these are ordinary people, they cannot be treated as well-trained medical students. They don’t have the concept of aseptic operation, so they have to teach them step by step from scratch, be patient, be patient...

When ordinary people wear masks and squeeze into the subway, two or three out of ten people will pull down the masks. If you look closely, there will be three or four masks that are not airtight enough. Even when an epidemic breaks out, medical staff need emergency training when putting on and taking off protective clothing!

It took a lot of effort to teach them the seven-step handwashing technique, and they passed the assessment one by one. After teaching them how to put on and take off protective clothing, a whole morning passed. And that afternoon, when everyone put on protective clothing and prepared to officially enter the P4 laboratory, they encountered another obstacle...

"Meow~~~"

The black cat next to Linn walked elegantly to the door and sat down quietly. Turning his head, his golden eyes looked at Gretel without blinking, and his snow-white beard moved. The meaning is very clear:

I want to go in too!

"Um... Mr. Trocca, you can't go in." Grete raised his hand to signal everyone to stop, bent down, and discussed with the black cat. Fortunately, fortunately, this black cat is intelligent, can speak human language, and can negotiate, so there is no need for him to scratch cats everywhere...

"Meow……"

The black cat turned to look at the airtight door, then turned to look at Gretel, its tail snapping and hitting the floor regularly. After a stalemate for a while, seeing that Gretel had no intention of compromising, a ball of black light suddenly erupted, and his whole body suddenly swelled!

"oops!"

The students exclaimed. Grete also subconsciously took a step back and saw Mr. Trocca transform from a black cat with white gloves that was 20 to 30 centimeters tall and weighed only a few kilograms, into a black panther in an instant. He pressed forward with great momentum, his chest was snoring, and a deep roar kept rolling.

Gretel: "..."

You dare to bite me? You dare to bite me? ! And your roar is totally wrong. Cheetahs, leopards, and snow leopards don’t roar like this. I’ve heard the sounds of leopards, and they are very delicate!

"Troca!" Linn yelled from behind. The black panther raised his head and glanced at his master. His steps suddenly stopped and his body shrank completely. In an instant, what appeared in everyone's eyes had turned into a delicate little kitten.

"Wow……"

Behind Gretel, the boys and girls couldn't help but make cute sounds. The black cat's body is only as big as a palm and can be lifted up with one hand. Its watery eyes take up almost half of its face. Her four short legs were spread out, and she walked a little wobbly, making her look even more pitiful and cute.

Seeing the students crowded around and looking over, it rolled on the floor, revealing its white belly and four pink paw pads. Behind Grete, the sounds of breathing suddenly began one after another, and some students tentatively wanted to ask for mercy:

"gentlemen……"

Gretel: "...Don't act cute, I won't let you in even if you act cute! You are not disinfected! You are not wearing protective clothing! If you are not allowed in, you are not allowed in! Get out! Mr. Linn!"

Next to the black cat, a bone hand suddenly descended and scratched at the head.

The black cat jumped up, climbed onto the high platform, got under the table, jumped into the faucet, and turned into a bolt of lightning at the entrance of the laboratory. However, the bone hand was obviously very experienced and kept chasing after him. After a few rounds, he actually pinched the back of the black cat's neck and lifted it into the air.

Behind the bone hand, pieces of bones clicked and flew over on their own, and it didn't take long to form a golden skeleton. He walked out slowly, rounded his arms, and threw the black cat violently:

"Meow ouch ouch ouch ouch ouch -"

The black cat's shrill cry gradually faded away. Grete breathed a sigh of relief and quickly ordered:

"MOSS, close the door!"

The main door of the laboratory closed quietly. Lin En came over sheepishly:

"Um...I'm sorry, cats are always like this. Although Troca is a demon pet, when it takes the form of a cat, it takes on the nature of a cat. By the way, can this skeleton come in?"

"...Can we come in? Skeletons are easier to wash..."

Alas, if the skeleton can be controlled remotely to perform precise operations, there is really no need for the magician to enter and leave the P4 laboratory in person, put on protective clothing, take off protective clothing, take a shower with potions, change clothes and rinse. If you put it this way, necromancers and dangerous biological experiments are actually a perfect match?

Unfortunately, controlling skeletons is a long shot after all. Gretel's current work still relies on magicians and magic apprentices to do it themselves. For several days, Grete walked around the laboratory, correcting various wrongdoings of the apprentices:

"The beef paste needs to be cooked through!"

"Don't hold the petri dish with your hands! Put it back into the dirty pile and prepare to re-sterilize it! The bacteria on your hands will contaminate the petri dish, and the results will be inaccurate!"

"Use a dropper to absorb the culture solution! Who told you to pour it directly into the petri dish! Change the culture solution and try again! You still put the culture solution bottle next to the mouth of the petri dish, are you afraid that there are not enough bacteria?!"

"Hands! Hands! Don't touch the operating table with your hands! Have you forgotten the sterile operation?!"

"Open the lid of the petri dish and use a microscope to look at it? Who taught you?! All the bacteria fell into it! - If there are too many bacteria, the result will be useless! It will also contaminate the lens!"

Ah - I'm just a clinician, not a biology major! I'm not even in the lab!

Why do I have to endure so many things that I shouldn’t have to endure... I haven’t done bacterial culture experiments many times in my previous life...

Grete looked at the sky in pain. However, lament is lament, teaching still needs to be taught. Only when they are taught can they be used as tools, right?

To be on the safe side, Grete did not choose those deadly infectious germs. He didn't even choose Staphylococcus aureus, just in case some student got careless and cut himself with a knife and got infected. Instead, he carefully removed a small bottle of E. coli from his own freezer, cultured, multiplied, and distributed it to the students:

bring it on! Let’s do bacterial culture, propagation, and staining experiments!

This bacterium is not very lethal. Even if the protection is not in place, the worst thing is that students should wash their hands before going out and again before eating!

The students learned so much that they were overwhelmed. After training in bacterial culture, bacterial staining, and microscopy, Grete began to train them non-stop to make culture media:

"Trim off the fat from the beef! It must be trimmed! Don't leave any!"

"Wash the sea pebbles! Don't be reluctant to use water! Which temple do you belong to? You should wash them more carefully. The oyster shells are all stuck to them!"

"Add sulfuric acid! Pour it down slowly, and be careful with your hands! Remember to test the pH, the test strips and comparison chart are given to you!"

A group of mage apprentices and priest apprentices rolled up their sleeves, removing the fat from the beef, boiling the beef, and rinsing the sea stone flowers. Every day, I smell of salt, blood and strange fragrance, and I work to the point of exhaustion...

"I asked, are we working in a restaurant?"

"Maybe?...I've never done anything in the mage tower..."

"I didn't even have it in the temple..."

"Uh...we, the apprentices, are the ones who help us add food to our temple, kill chickens and ducks...but it's a pity that the fat needs to be trimmed off of good beef..."

Several boys from the God of War Temple replied in a low voice. Such beautiful snowflake beef can only be eaten by high-ranking knights and bishops in their temple! If you put it in the mage tower, not only can you not eat it, but you also have to remove the fat first!

The four apprentices of the Order of the God of Nature lowered their heads and said nothing. They do a lot of work: turning the soil, fertilizing, pulling weeds, taking care of poultry and livestock, cleaning up manure... There is no shortage of farm work. Are temple priests more noble than others?

nonexistent!

After struggling like this for half a month, the students' operations finally changed from jerky to proficient. Less and less things were wasted, and Gretel's scoldings became less and less. Finally, Gretel announced the start of the first phase of the exam:

"Let's test our learning results! - Starting from making the culture medium, everyone operates the entire process independently to complete the culture, isolation and microscopic examination of fecal E. coli!"

"ah……"

The 24 students were up and down, whining. It looked like he had skipped class for half a month, and the teacher suddenly informed the students that they were going to take an exam. Gretel looked at the bitter faces with a smile and clapped his hands:

"If you make it, there will be rewards~~~"

"What if it can't be done?"

A weak voice came from the back of the crowd. Gretel smiled:

"If you can't do it, you can make up the exam. If you fail the make-up exam three times in a row, I can only ask you to go back to where you came from..."

This threat not only made everyone nervous, but also Master Lin En followed Alexander. He made a set of utensils by himself, washed the seaweed, boiled the beef, added acid and alkali, filtered and removed the residue, and did everything meticulously step by step. Next to him, the Golden Skeleton also made a set of things, and followed the exact same operation, seeming to be trying to create a double insurance.

However, even so, Master Lin En still failed to finish first. While he was still preparing the dye to dye the bacteria, the group of students already raised a hand:

"Mage Nordmark, I'm ready here!"

Gretel walked over quickly. Looking under a microscope, the appearance of E. coli is clearly visible under the microscope, with its short, thick shape and flagella. He smiled with satisfaction and wanted to pat the student on the shoulder. He held back his hand halfway and just patted him with the hand of the mage:

"Yes, yes, you did the right thing! What's your name? Which organization are you from?"

"My name is Leon Carlos, from Black Crow Swamp, sir." The apprentice bowed and saluted with a clear voice. Through the protective clothing and mask, Grete couldn't see his expression, but he could hear the joy in his voice, almost a little excited. Grete's mood also became cheerful:

"Very good! The third update tonight - ah no, starting tomorrow, you can help me and we can start a new project!"

*****

I found out how to make agar agar, but it’s hard to find out how to make beef extract... I read a lot of papers, and all I found were to add ginger powder, allspice powder, nutmeg powder, white pepper... to make beef extract for culture media. How?

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