Let the heterogeneous assistants who work together on the "Discoverer" stand in their respective positions, and Todd himself assumes the role of the "Investigation System Successor".

The samples of spring water were dyed and put into the observation chamber. After the "wind pressure" vacuum treatment, under Todd's instructions, Richer fine-tuned the position of "Tesla" and slowly increased the voltage intensity, the "condensing" alien species hit the electron beam out The photons were collected and amplified and burned on the white paper.

Todd looked at the white paper that was finally imaged. He could barely see the general situation in the sample, but it was still too blurry.

After trying a dozen more times, Todd picked the one that looked the clearest.

The paper shows that a strange thing is attached to the surface of the huge bacteria. It looked a bit like a crater on the surface of the moon, and a "Space Lunar Module" was placed.

Seeing this thing with four legs and a spherical body, Todd became more and more familiar with it. This thing seemed to be the most common virus in the previous life-"phage".

Speaking of bacteriophages, they are the most common and most diverse viruses in the microcosm of previous lives. It is no exaggeration to say that one liter of water may contain trillions of bacteriophages, more than all the stars in the universe combined. It's no wonder that some biologists would say that compared with the world of viruses, the universe is nothing but dust.

The principle of bacteriophage lysis of bacteria can be summarized in a few simple sentences. The first step is "landing bacteria", the tail of the phage is attached to the cell wall of the bacteria; the second step is "oviposition", the phage pierces the tail shaft into the cell wall, like a syringe, injecting DNA into the bacteria; the third step , "Hatch", the phage will use the "nutrient" in the bacterial cell to replicate the DNA and protein of the progeny bacteriophage in large quantities, and finally burst out from the host body like an alien. The progeny eat all the bacteria and go out to find the next one victim.

But generally speaking, bacteriophages as viruses are different from broad-spectrum antibiotics such as penicillin. A lone bacteriophage can only lyse one type of bacteria. This sounds a bit useless, but compared with antibiotics, they have many advantages.

for example:

1. Low harm. Most bacteriophages will only attack specific bacteria and will not harm normal cells and beneficial bacteria in the human body.

2. Less antibodies. It is difficult for bacteria to produce antibodies to phages, but they have a considerable chance of being immune to antibiotics and may be transformed into super bacteria.

3. No residue. Bacteriophages are host-dependent and will die with the disappearance of the bacterial host, and will not remain in the human body to cause a series of toxic reactions.

4. Easy to use. The development cycle of phage is short and the cost is low. It can be purified and bacterial fragments can be purified by simple centrifugation, can be stored for a long time at room temperature, and is convenient for transportation and application.

Of course, besides this, there are many other uses of bacteriophages, so I won't introduce them one by one here. (For heterogeneous bacteria, there is a very important role, which will be mentioned later)

After figuring out the truth that spring water can "cure" foreign species, Todd began to study these phages further, but discovered two interesting things: Most of the phages in spring water only target foreign bacteria and have no effect on other bacteria; almost twilight. Every kind of heterogeneous bacteria in the West Town Ability Library can find a specific natural enemy of phage in the spring water.

There is one more important thing.

The phages in the spring water are not effective against "Sutherland Archaea".

Todd felt incredible at first, but after repeated experiments, he verified this result. When the bacteriophages land on the "Sutherland Archaea", after a period of time, they lose their vitality and eventually become exhausted. What is the specific reason, with this original electron microscope, it is impossible to find out.

In short, bacteriophages can "cure" alien species, but they are not effective against "heirs".

With this result, Todd was finally relieved.

The next step is to conduct a toxicological test on the spring water.

Todd took five experimental mice as a group and fed them with spring water according to the tolerance ratio. After a week of observation, he found that five mice had high fever, erythema and dehydration in varying degrees, and were similar to those of the dead children in the Valkyrie village. The exact same symptoms.

After anatomy and laboratory tests, Todd finally found the crux of the problem.

Although most of this spring water containing high-density bacteriophage viruses is harmless phage, a small part of it is still toxic. The latter destroys the immune system of the experimenter and causes concurrent infections caused by weakened immune function. Especially for those babies, their bodies are not yet fully developed and their immune functions are not complete. In addition, in villages lacking food and water, feeding them with this spring water is tantamount to feeding the babies every day. .

As for the Valkyrie, why did they not show symptoms of infection?

According to Todd's speculation, they should obtain a large amount of "Sutherland Archaea" from some sources and store them in their bodies. When the phages invaded, the archaea became a barrier to their bodies and saved their lives.

Knowing this result, Todd immediately found Huggins and asked him to send his subordinates to rush to Sharptala Island as quickly as possible to find the Valkyrie, telling them to stop using the village’s spring water and use other fresh water. source.

As soon as Huggins walked away, Cumberland came to look for him.

The old knight was dressed in uniform, and the first sentence he saw Todd was: "Commander, do you have time?"

The latter thought that the experiment on spring water had just come to an end, and planned to hear what Cumberland wanted to say.

The two came to the chief's room of the headquarters of the Knights. Cumberland didn't intend to take a seat at all. He said straightforwardly: "The chief, this time the army on the North Quarry is planning to leave in three days. I hope You are the commander."

Todd said in surprise: "What? Do you have other things? Can't participate in this battle?"

The old knight shook his head: "I will participate in this expedition..."

"Then why should I be a commander?"

Cumberland looked a little angry between his eyebrows: "Head of the team~lightnovelpub.net~ Forgive me for the old man's talk, you have too much time in the laboratory!"

Todd was completely dumbfounded when he heard Cumberland's sudden and thoughtless words.

Cumberland looked at the "Umbrella" banner in the commander’s room, and said in as gentle a tone as possible: “In the past, you were the commander of the West Knights and the spiritual leader of the entire Knights. The matter of the war will be handled by the chief priest and the chief of the legion. But in the future, everything will be different. If we successfully occupy the North Quarry this time, it means that the "Knights of the West" will be formally established, you On his shoulders will bear the dual responsibilities of the leader of the Knights and the secular king."

Cumberland paused and turned his attention to Todd: "A lamb grazing in the sheepfold can never lead a group of hungry wolves! Lord Todd, believe me, as a king, you You need to get out of that **** "Tongtian Pagoda", let your people, let your soldiers, see your majestic victory on the battlefield!" (https://)