let go of that priestess

The culture medium is added to the petri dish, and then added separately, including but not limited to: rotten fruit, rotten stems and leaves, a pinch of ash, a handful of sand, etc.

These substances may contain penicillin spores, which is what we want to cultivate.

Within a week after culturing, if the hallmark of Penicillium appears in the petri dish, separate the mold, add it to another glass vessel, and continue culturing in a sealed glass tube.

And this is the most basic version of penicillin.

Because we can't make ether for the time being, we can't purify it, so we'll stop here for the time being. "

"Hmm...penicillin?" Jiang Hongdou thought for a while and said, "What is its function?"

"It's one of the most effective antibiotics."

The girl naturally couldn't think of it, Ji Cheng explained:

"Including pneumonia and other diseases that you know now, and the situation where people in the clan often die after being injured, that is wound infection and tetanus.

Penicillin can treat almost all these diseases and diseases you can think of!

So penicillin has another name——

Panacea! "

"Ah? Almighty!?"

Jiang Hongdou was taken aback.

Indeed, she never thought of this. Can a drug be called a panacea?

The girl opened her mouth slightly and reconfirmed: "You mean, this penicillin can treat almost anything!?"

"Uh, let me add some clarification."

Ji Cheng blinked: "As I said just now, this kind has not been purified, and the effect will be worse.

In addition, the penicillin I have is not the same as the penicillin we are going to breed. It is a super strong penicillin that is 1000 times more effective than the original strain.

So, unless we are lucky enough to explode and accidentally harvest a penicillin mold that is 1000 times more powerful than the original strain, the effect will be much, much worse..."

"...This." Jiang Hongdou was confused again.

Ji Cheng spread his hands, helplessly: "It's not bad, as a pre-medication, it's better than nothing, right?"

"Yeah, too."

Jiang Hongdou felt a little regretful, and then cheered up and looked at the kiln:

"Then, shall we start work? What we can do now seems to be to make glass first."

"Hmm~ target glass, let's start!"

Chapter 73 Your Excellency is Now... in Human Body

Glass is a high-strength, heat-resistant, non-chemically reactive, and infinitely recyclable amorphous substance that appears as an amorphous solid, but is actually a liquid.

Because of its characteristics, it is very suitable as a vessel for scientific research, so it can almost be regarded as one of the cornerstones of scientific development.

The front-end technology for making glass: kiln, soda, quicklime, seems to have all been achieved, but in fact, the first kiln has not yet been achieved.

There are kilns, but the current temperature is not enough.

Even if there is grass alkali to reduce the melting point of sand or silica to 1700 degrees, it can only be reduced to 1400 degrees.

Their kiln is only 1200 degrees, with a difference of 200 degrees.

This temperature difference needs to be compensated by blowing air.

So, the first step in making glass is actually making the bellows.

Ji Cheng drew the size of two pipes on one side of the kiln firing chamber, drew the extension distance with branches on the ground, and then preliminarily determined the size of the bellows.

Then he and Jiang Hongdou turned into craftsmen again, and began to hand-made foot-operated wooden bellows, and animal skins will be used in the box and joints.

As long as the airtightness is ensured and the wind is blown in smoothly, the rough and hard animal skins of the clan before are also acceptable.

The rest of the afternoon was spent in production and dinner was delivered here.

After the meal, Yingying brought the priestesses over for the evening class. Seeing the scene where the adults and the saintesses were working hard to polish and cut the wood, they all burst into wow again.

What are you doing?Split wood, grind wood?

Your Excellency seems tired?Hands are still full of sawdust.

Ji Cheng didn't care about their surprised looks, clapped his hands, got up with Jiang Hongdou and walked over.

Yingying immediately led the priestesses to salute and pressed their chests.

As a group of teachers who have recently studied with the adults, they have all achieved standard salute postures under Yingying's strict requirements.

Ji Cheng looked at it and nodded, it felt much better, it wasn't troublesome at all, he cleared his throat and said:

"Okay, let's go to class, soap was mentioned in the morning, and some ways to prevent diseases, you know about bacteria and parasites.

However, the statement that this kind of microscopic organisms cause people to get sick must be memorized by rote, and it is still difficult to understand.

So the evening class will talk about it from this aspect.

That is, germ theory.

First of all, it is impossible to observe how small bacteria are, but I can give an example. "

Ji Cheng pointed to the ground and said, "You already have the weight concept of 1 catty, so take 1 catty of soil and divide it into 500 equal parts, and I estimate that one part contains 1 million bacteria.

Can you understand this? "

"...!?"

The girls were dumbfounded when they heard the words.

Some thought they heard it wrong: "My lord, how much did you say? 4000?"

"That's right, there are more than 4000 million little things crawling around in such a small amount of soil."

"what......"

Imagine this scene, many people trembled and realized something that made people feel uncomfortable:

"My lord, you said that soap can wash off the germs on our hands, so how many germs do we have?"

"Uh, this."

Ji Cheng thought for a while, and planned to use the ratio of human cells to bacteria to explain, but when it comes to cells, they don't understand.

He put it another way: "If you think of the human body as being composed of parts, in terms of numbers, the number of bacteria is 10 times the number of parts that make up your person."

"10 times!?"

A priestess pointed at herself in amazement: "Then am I a human or a bacterium?"

"Human..." Ji Cheng blushed, "It can't be explained just by the amount of data.

Just mentioned, bacteria are small, so you definitely look like an individual, not a large collection of bacteria. "

"Oh......"

The girls immediately breathed a sigh of relief.

Jiang Xue also breathed a sigh of relief, but then she thought of another question and asked in a daze:

"My lord...Since bacteria are everywhere, small and numerous, it means that even with soap, we can't guarantee absolute cleanliness and cleanliness, right?"

"Theoretically yes."

"Well, what about you?"

Jiang Xue looked at Ji Cheng, her eyes slightly staring at Dao:

"You also come into contact with various things every day, wood, soil, water, all kinds of utensils, all of which carry bacteria.

So... so are you absolutely clean and clean! ? "

"Eh?"

Ji Cheng was taken aback.

Jiang Hongdou was also taken aback, and Yingying was also taken aback.

Is he absolutely clean and clean?

No... He is a human being, and he naturally carries bacteria, not the absolutely holy and pure God that everyone usually thinks.

this problem......

Jiang Hongdou and Yingying looked at Ji Cheng at the same time, with some worry in their eyes.

How would he answer?

"what's your name?"

Ji Cheng looked at the priestess who asked the question, paused for a while, and finally smiled and said, "Your reaction is very sharp."

"My lord, my name is Jiang Xue! I, my reaction is very sharp?..."

This is almost an admission!

Jiang Xue was even more surprised: "My lord, did I guess right!?"

"Well, yes, I can tell you with certainty that I also have bacteria on my body, there must be some, even essential.

Because actually, not all bacteria are harmful.

I wouldn't even be able to live without certain bacteria, like the gut flora that help digest the food I eat.

So no matter when, at least the intestinal flora is still with me~"

......

......

After the evening class, the atmosphere today is a little bit delicate.

The priestesses bowed and said goodbye thoughtfully, and after returning to the village, they all gathered in Yingying's tent.

"High priest, what your lord said today..."

A priestess spoke halfway, but didn't know how to continue, and her voice stopped abruptly.

Yingying glanced at her and then at the others, feeling a little headache.

What to do now?  …

Everyone obviously wanted to check with her.

So, do you want to explain it clearly to everyone?

Judging from the previous meaning of the adults, it seems that they have dealt with it by default, and entrusted this task to themselves.

But in practice, you must find a tactful way to explain it...

Just when Ying Ying was having a headache, among the priestesses below, Jiang Lulu blinked and said, "High Priest, you already knew about it, right?

Jiang Xue and I were not only responsible for conveying the will of the gods, but also taking care of the daily life of adults and saintesses.

At that time, you told us to prepare two sets of food and supplies, and he also needs to eat and bathe. "

"Well...that's exactly what I said."

Yingying sighed, and when it comes to this point, she intends to admit it directly, and if there are any consequences in the future, she will have to try her best to suppress it.

But what I didn't expect was that Jiang Lulu and Jiang Xue who was beside her looked at each other at this moment, but showed a sudden expression, and said:

"It turns out that this is true. Jiang Xue and I guessed it earlier. My lord has never descended before. Once he really responds to the arrival of the Damu clan, there may be some restrictions.

So, my lord is now... in human form? "

"Eh?" Yingying was stunned for a moment, then quickly recovered, nodded slightly and said:

"This, that's right... you can understand it this way, my lord is now a human body, but he is still a god of the Great Wood Clan!"

.

Chapter 74 The integration of kingship and theocracy......