Chapter 484: Try giving a blood transfusion to a dead person?
Hirudin, or in other words, uses leeches as a casting material to release anticoagulant spells that have immediate effects.
At the very least, when Grete centrifuged the blood again, sucked out the serum and red blood cells, and performed cross-matching, he could already observe coagulation in some test tubes, and not in some test tubes. Of course, he also observed coagulation in some test tubes.
Hemolysis phenomenon.
"Look, if it doesn't clot or dissolve, it means it's the same type of blood!"
Gretel raised the test tube high, his eyes shining. In his previous life, regardless of whether RH was positive or negative, humans had four common blood types. Looking for four samples, the probability of having one of each type in one person was still very small and relatively high.
Probability, you can find two people with the same blood type!
Following this path and increasing the number of samples, although it cannot prove that types A, B, AB and O currently lack the conditions to study antigens and antibodies, it can at least prove that there are several different blood types!
Then we can have blood transfusions! Although treatment can take care of most of the problems like surgery, we still have blood transfusions to assist us, which makes us more courageous...
Grete's eyes sparkled with excitement. When he turned around, he encountered a group of confused eyes:
"Well... the lack of blood coagulation is really not because the anti-coagulation spell is too strong?"
"It may also be because too much anticoagulant medicine is added! The principle of anticoagulant spells is to use the effective power in the casting materials to affect the blood!"
"Yes, yes!"
"It could also be that" pointing to the centrifuge, "it spins too fast, or spins too many times, breaking all the blood cells inside, so it doesn't coagulate?"
Gretel took a deep breath and exhaled deeply. Not only did he not feel bored, but he also felt a little friendly. Thinking back to when he first entered the medical hall, his mind was full of questions, or, perhaps, full of fantastic ideas.
I feel that I am very imaginative...
Then, the teacher sprayed him with a black face:
"Go and see "Physiology"! "Immunology"! I haven't even learned the basic theory yet, so I'm just thinking wildly. One by one, I want to fly before I even learn to walk!"
Of course I figured it out later. The coagulation mechanism of blood type tests and the anticoagulation mechanism of anticoagulants follow two different routes. The "coagulation" of modern blood group tests uses the reaction of antigens and antibodies to "tie" red blood cells.
Together, one can observe blood coagulation;
The anticoagulation of anticoagulants antagonizes the natural coagulation mechanism. For example, heparin inhibits thrombin, and EDTA removes calcium ions... Therefore, no matter how much anticoagulant is added or how strong the anticoagulant is used, it will not
It will hinder blood coagulation during cross-matching.
As for the centrifuge, red blood cells will rupture. Most likely because the centrifugal force is too great and the red blood cells will be crushed. It has nothing to do with the number of turns.
However, although he did not know the centrifugal force of the centrifuge used by Gretel, he was certain of one thing:
The version he used was similar in size to the one used by the examination department in his previous life, and the speed was similar. Therefore, it would definitely not be able to crush red blood cells!
But again, there is no current research conditions for antigens or antibodies, and there is no way to prove them. Grete can only draw a simple conclusion:
"Anyway, as long as it can be used! A batch of blood samples were produced by the same spell cast. Some of them coagulated, some were hemolyzed, and some did not coagulate or hemolyze. This shows that the influencing factor is not the strength of the spell and the material, but something else!"
This principle makes sense. If it doesn't make sense, the worst thing is to do a few more experiments to verify it. Archmage Grom nodded:
"Then...it proves that some blood can neither dissolve nor coagulate, so what?"
"With neither hemolysis nor coagulation, as long as they are of the same blood type, they can be transfused to each other! When the human body loses too much blood, the probability of a transfusion reaction will be much smaller if blood of the same blood type is transfused!"
The necromancers looked at each other. For those who had lost too much blood, they had to transfuse blood to save their lives. Of course, the necromancers had tried transfusions of cow blood, horse blood, sheep blood, human blood, etc.
They have made more than one attempt...
A small number of experiments on animal blood transfusions succeeded for a short time, but most failed; a small part of experiments on human blood transfusions succeeded, but most failed. The failure rate was too high, and there was no advantage at all in terms of treatment, and there was no way to find it at all.
Develop the rules for success.
The parliament's paper library contains dozens or hundreds of papers describing the process of failure, and they are full of the corpses of those who were affected by the spell.
So, is the secret to a successful blood transfusion that the blood types are the same?
"Can I do experimental verification for you?" Among the dozen necromancers, the one who provided mosquitoes as casting materials and was changed into leeches by Gretel took a step forward and bowed slightly. Gretel answered without hesitation.
:
"Of course we have to do the experiment! We have to do it! What are you going to do?"
"Find a group of people to conduct experiments according to your ideas and verify the success rate of blood transfusion..."
The necromancer blurted out the answer without thinking.
"What?!" Even though Grete was mentally prepared, he was still startled. Do it directly to a healthy living person? His voice became louder unknowingly, and he said:
"no!"
"We gave you the money..." The Necromancer who asked for help explained carefully. Black Crow Swamp has a group of living people kept in captivity at any time. If you want to get experimental materials or do experiments, you can bring them here of course, but it is not for nothing.
If you use it, you must pay money to the school.
And these living people will usually be given money to get materials, and if they get sick, disabled, or die, they will also give pensions to their families. If you want to be an experimental subject in Black Crow Swamp, it doesn't matter, you can arrange it later.
Not yet.
Of course, if any archmage spoils the experimental products too much, there will suddenly be not enough experimental products, and there will be too many poor people on the street. Just throw out a handful of gold coins, and some will die, and some will live...
"No, absolutely not." Gretel shook his head quickly.
The Necromancers collectively lost their expressions. It’s not that they don’t pay, the experimental subjects have signed life and death certificates, why can’t they be used? This Nordmark mage has too much control...
But there is no other way. After listening to other people's lessons, using other people's experimental plans, and doing verification experiments for others, you must abide by other people's rules. Next to the requester, a younger necromancer raised his hand cautiously:
"Then... try giving me a blood transfusion?"
I volunteer! I am willing to devote myself to research, and I am not humble! Well, before doing the experiment, I have to go next door to bring some mages from the medical branch over...
"No!" Gretel continued to shake his head:
"It's not a matter of whether you are willing to do experiments on healthy people, that's not allowed!"
It is not in line with medical ethics!
Where can you find people who have lost too much blood and may die, and try to give them blood transfusions? Gretel rubbed his forehead, and then rubbed it again. Losing too much blood and getting injured are the groups with the highest probability of encountering these things in this era.
Yes...there is!
He turned to Archmage Grom:
"Otherwise... you will take me to the Temple of the God of War? Or where is the army? I will find a group of people, check their blood types first, and then find an opportunity to give them blood transfusions?"
"Then when will we go..."
The Necromancers collectively wailed. The key point is that their relationship with the Temple of the God of War is not very good, so they cannot conduct experiments openly. Why don't they find an army? Recently, the area has been quite peaceful, and there have been no major conflicts between the lords...
…
Are you expecting that little bit of injury during training?
The probability is too low!
"Then... try it with an animal? Cat, dog, pig? Or horse?"
Gretel proposed another plan. The necromancers were shocked:
"What? Do animals also have different blood types?"
"There should be..." Grete answered without any confidence. In other words, cats have different blood types, so do dogs, and many animals have them. But how many blood types do these animals have, what proportions they account for, and how many samples need to be taken to determine it.
Different blood types?
Gretel has no idea. Hey, I heard a classmate complain before, saying that although cats only have three blood types, more than 95% of cats have the same blood type. In other words, it is basically impossible to catch two cats and transfuse them randomly.
There will be problems...
Then there is no experimental value!
He himself had no confidence, and it was even less likely that others would agree. The black-robed mages in the room shook their heads in unison, with their black robes fluttering and their thin, waxy heads shaking. It looked very scary. As they shook their heads, someone suddenly said:
Pat on the head:
"We can give blood transfusions to dead people!"
"Yes, that's right! Give blood to the dead!"
"I'll get the body!"
"I'll get it too! My share of high-level corpses this year has not been used up yet!"
A group of magicians ran away. Gretel was at a loss:
"Wait...what the hell?"
What the hell is giving blood to a dead person?! Your dead person needs a blood transfusion. No, your dead person still has blood in his veins!
"You don't know this, right?" Archmage Grom said with a smile. After Gretel entered the Tower of Sleeplessness, he has been delivering shock to others. It is rare that he can be shocked by others.
"The school of necromancy has always had a theory, that is, if the vitality of the blood can be maintained, it will be more conducive to controlling the corpse and even resurrecting the corpse. Therefore, many high-level corpses have flowing blood. Since you don't want to use
Living people, then let’s try it with dead people.”
...No, by the way, the blood types of the corpses you preserved can also be tested?!
Grete continued to be confused. Soon, a large number of necromancers came back, dragging one to two corpses each, and rushed into the laboratory cheering.
Gretel had to direct:
"Don't be anxious! Don't be anxious! First, organize the experimental table, brush the test tubes, and label them!"
"Don't be too lazy to use the Cleaning Technique when brushing test tubes! The Cleaning Technique can only be used for the first time, and you have to brush manually after that! The standard is that the water on the inner wall of the test tube neither condenses into water droplets nor flows down in strands!"
"Don't draw too much blood, a tube of 5 ml is enough! Only one or two drops of blood are needed for blood matching experiments!"
"The centrifuge needs to be balanced! Balance it! It cannot be started without balance!"
"squeak"
The rotating shaft made an unpleasant noise. With quick eyesight and quick hands, Grete cast two more defensive spells on himself and jumped behind Archmage Grom.
****
Let’s sigh with emotion. The development of many medical research in the early years was thanks to the advantages of low human rights. Now, in order to verify that “this blood transfusion is possible”, you randomly recruit healthy people to try blood transfusions?
Get rid of the head of the Medical Ethics Committee!
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