It's not that hard to open a hospital in another world, right?

Chapter 653 Two Portable Assassins, Arrange Together!

Leaving aside the dose and talking about toxicity... No, leaving aside the issue of drug dose control, we only talk about the issue of remotely injecting drugs into the other party's blood vessels.

After trial and error and summarization, Gretel and Lynn discovered two rules:

First of all, the stronger the physique of the subject, the greater the spell resistance.

"The resistance of a cow is greater than that of a rabbit; the resistance of low-level monsters is greater than that of ordinary animals."

Gretel jotted down a few strokes.He raised his head and looked at Lynn with concern:

"So, if your enemy is a high-level powerhouse..."

"So find a way to reduce resistance as much as possible." Lynn smiled nonchalantly.Facing the powerful enemies that may be faced in the future, there is no worry on his face:

"Second, the farther the distance between the imported medicine and the human body, the greater the magic resistance."

"Tried it before?"

"Predecessors have tried it. For example, the resistance to saltpeter is greater than that of nitroglycerin, and the resistance to mercury and arsenic has already reached the point where the same level is against the same level, and the failure rate is 90%."

Otherwise why choose saltpeter?It is a balance between success rate and lethality.

It's not that the senior mages have tried other spell-casting materials, but they are either too laborious or the effect is too poor...

For example, inject a drop of water into the opponent's blood vessel?The resistance is small, but it's useless!
Emmmmm......

"Brother Lynn, the material of this spell is changed to the ingredients in the subject's body, which has the least resistance, right?"

"Yes, but—"

Lynn suddenly stopped talking.I saw Gretel jingling, jingling, digging in the interspatial bag for a while, and took out a small medicine bottle.

"Brother Lynn, you try this?"

Lynn took it with suspicion.Observe carefully, the fine white powder looks similar to table salt;

Pour out a handful, rub it with your fingertips, and the touch is similar;

Looking at Grete inquiringly, Grete nodded and smiled, with an encouraging face:
"It's okay to lick it and try it, don't worry, it's not poisonous."

Lynn licked it without hesitation.Then, he couldn't help twisting his face:
“So salty!”

Bitter salty!

If this thing is called table salt, the table salt would cry to death!

"Potassium chloride?"

Gretel shrugged.

"Impure salt also contains this, and blood also contains this. Brother Lynn, come on, try?"

Lynn took a deep breath, finished off a bottle of spiritual potion, and cast the spell again.This time, the magic power was running smoothly, without any resistance.

Sure enough, the things that already exist in the body have the least resistance?

The magic power engulfed the blood, and the potassium chloride dissolved in the blood, and rushed into the rabbit's body.In an instant, the rabbit uttered a scream of pain and fell to the ground.

With sharp eyes and quick hands, Gretel took out the stethoscope and handed it to the side.Lin En quickly put on the stethoscope, pressed it on the rabbit's chest and listened——

No more.

There was no heartbeat at all.

He glanced at Gretel in shock.Gretel tilted his head to him and spread his hands:
"That's right, this thing is really not poisonous. It's just a pinch, and if you drink it 10 times the amount, nothing will happen."

But high concentrations of potassium chloride, administered intravenously, can cause cardiac arrest.In Gretel's previous life, this was the method used to execute the death penalty.

Of course, statically pushing high-concentration potassium chloride will cause severe pain.Out of humanitarianism, before the injection, the condemned prisoners will be injected with anesthesia...

But these need not be said.Anyway, whoever Brother Lynn releases this spell on will definitely be immortal:

"Brother Lynn, just remember, this stuff will cause severe pain when injected into the human body-I'm not sure if this kind of pain can interrupt the casting of spells-but once it enters the heart, it will cause sudden cardiac arrest-"

"Then... can it be saved? For example, use magic such as detoxification to drain the potassium chloride in the human body?"

Gretel sighed deeply.

"If you drain it, you will definitely die. You don't need to drain it. If the blood potassium drops to a little bit, the muscles of the whole body are weak, and the heart muscle and respiratory muscles are weak, and you will die quickly."

Yes, potassium ions are such a magical thing.High is not good, low is not good.You will die if you exceed the upper limit, and you will die if you fall below the lower limit.

Lynn put the bottle away solemnly.With this trump card, in the case of fast movement, injury, high level of the opponent, and a sharp drop in the success rate of casting spells, it is equivalent to an extra life!

"you……"

"Brother Lynn, I still have an idea, it might be worth trying." Before he could say thank you or something similar, a flash of inspiration flashed in Gretel's mind, and he interrupted hastily:
"Try the air! If you don't have anything on you, inject air and blood into the enemy's body, maybe it will work!"

When people take risks outside, there are always times when they are displaced and lose everything.But if his calculations are correct, then wiping a drop of blood from his body and holding a handful of air can also use this spell to fight back!

Lin En was puzzled for a moment, seeing Gretel's urging again and again, he still followed what he said.Gretel kept coming up with ideas on the sidelines:

"Heart! Aim for the heart! Fill the heart with air! This is the fastest!"

While commanding, he had already thrown a magic for measuring blood oxygen saturation and an electrocardiogram magic, which landed on the rabbit.On the light curtain, it was full and bright, with a saturation of 100%, and the lines of the electrocardiogram were regular. The rabbit looked normal.

The spell was thrown silently.There is no flame, no acid, nothing overt that is immediately noticeable.In other words, if you use this spell to assassinate from a distance, the probability of being noticed will be greatly reduced.

However, shortly after the spell was thrown, the blood oxygen saturation plummeted, and the rabbit was short of breath and restless.The electrocardiogram ran up and down like crazy, and after a while, a straight line was drawn——

"Heart stopped?!"

Lynn was surprised.Gretel sighed softly:

"That's right, the air embolism caused cardiac arrest. Brother Lynn, you must be careful with this magic. If you throw it at the wrong person, I'm not sure I can save it!"

"Don't worry!" Lynn agreed.He looked at Gretel, hesitated to speak, and before he could speak, Gretel had already picked it up:
"Want to report to Black Crow Swamp? Want to write a thesis? You can do it! —— But Brother Lynn, you have to help me disassemble this spell. I want to study how it controls the dosage!"

"No problem!" Lin En patted his thin chest loudly:

"Don't worry, I will never leave Nevis before I teach you!"

...You want to go out for another adventure? !
Although worried, Gretel also knows that everyone has their own advanced route.Just like Gretel himself, if he doesn't work hard to practice medicine, he may be stuck in the priest's apprenticeship.As for Lin En, if he doesn't go out and make a living, it will probably be bad for his development...

So Gretel had to work hard to delay the progress of the study, so that Lynn could practice this magic more proficiently.Of course, he had his own troubles:
"So how exactly do you determine blood potassium levels?"

Beside, in front of Lynn was a plate of potassium chloride, a pair of tweezers, and a row of rabbit cages.It has progressed to the point where you take one grain, cast a spell, grab another grain, and cast another spell...

****
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　Both hyperkalemia and hypokalemia are really dangerous, really.

　　It must not be taken lightly.

　　And sigh, Gretel is really good-tempered, he doesn't want to kill people, otherwise even high-level mages can't help but guard against it
　　
　
(End of this chapter)