Chapter 488: Try Giving a Blood Transfusion to a Dead Person?
Hirudin - or in other words, using leeches as a spellcasting material, the anticoagulant spell released has an immediate effect.
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 that coagulation occurred in some test tubes and not in some test tubes - of course, in some test tubes, Hemolysis was observed.
"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 previous lives, regardless of whether RH was positive or negative, humans had four common blood types. Looking for four samples, the probability of finding one person of each type is still very small, but with a relatively high probability, two people with the same blood type can be found!
Following this path and increasing the number of samples, although it cannot prove types A, B, AB and O - there is currently a lack of conditions for studying antigens and antibodies - it can at least prove that there are several differences. blood type!
Then you can have a blood transfusion! Surgery and other things, although treatment can take care of most of the problems, but there is still blood transfusion at the side to assist, which makes me more courageous...
Gretel's eyes sparkled with excitement. When I turned around, I met a group of confused eyes:
"That... 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 was it not annoying, but it also felt a little intimate. I think back then, when he first entered the medical field, he was just like this, full of questions, or full of fantastic ideas, and felt that he was 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 after another, they want to fly before they even learn to walk!"
Of course I figured it out later. The coagulation mechanism of blood type test and the anticoagulation mechanism of anticoagulant take two routes. The "coagulation" of modern blood type tests uses the reaction of antigens and antibodies to "tie" red blood cells together, allowing people to 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 hinder blood coagulation during cross-matching.
As for the centrifuge, red blood cells will rupture. It is probably because the centrifugal force is too strong and the red blood cells are crushed. It does not matter how many times it is turned.
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 to test Corey in his previous life, and the speed was about the same. Therefore, red blood cells cannot be crushed!
But again, there is currently no research conditions and no way to prove antigens or antibodies. Gretel could only draw a simple conclusion:
"Anyway, as long as it can be used! A batch of blood samples were produced at the same time by casting a spell. Some of them coagulated, some were hemolyzed, and some were neither coagulated nor hemolyzed. This shows that the influencing factor is not the strength of the spell and the material, but something else!"
This makes sense. If it doesn't make sense, the worst possible thing is to do a few more experiments to verify it. Archmage Grom nodded:
"Then...it proves that some blood can prevent hemolysis and coagulation, 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 people who have lost excessive blood, give him a blood transfusion to save his life - of course the necromancers have tried it. They have made various attempts to transfuse cow blood, horse blood, sheep blood, human blood, etc. more than once...
A small number of experiments using animal blood were successful for a short period of time, but most failed; a small number of experiments using human blood were successful, but most failed. The failure rate is too high, there is no advantage over treatment techniques, and there is no pattern of success at all.
The parliament's paper library, dozens or hundreds of papers describing the process of failure, is full of the bones of those who were affected by the spell.
So, is the secret to successful blood transfusions the same blood type?
"Can I do some 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 the experiment must be done! It must be done! - 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?!" Gretel was still startled even though he was mentally prepared. Do it directly with healthy living people? His voice became louder unknowingly, and he said:
"no!"
"We gave the money..." The Necromancer who asked for help explained carefully. There are a group of living people kept captive in Black Crow Swamp at any time. If you want to get experimental materials or do experiments, just pull them over - of course, it will not be in vain, you must pay the school.
These living people are usually given money to collect materials. If they become sick, disabled, or die, they will also give pensions to their families. If you want to be a guinea pig in Black Crow Swamp, it doesn't matter. You can't wait to do it.
Of course, if any archmage spoils the experimental products too much, there will suddenly not be enough experimental products, and there will be many poor people on the streets. Just throw out a handful of gold coins, and some will die, some will live...
"No, absolutely not." Gretel shook his head quickly.
The necromancers' collective expressions dropped. It’s not like they won’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 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 volunteered! Dedicate yourself to research, don’t be shabby! Well, before doing the experiment, I need to go next door to get some mages from the medical branch to come over...
"No!" Gretel continued to shake his head:
"It's not a question of whether you are willing or not - it is not allowed to directly conduct experiments on healthy people!"
It is not in line with medical ethics!
Where can one go to find someone who has lost so much blood that they might die and try to give them a blood transfusion? Gretel rubbed his forehead, then rubbed it again. Excessive blood loss and injuries. In this era, the group with the highest probability of encountering these things is... Yes!
He turned to Archmage Grom:
"Otherwise... you will take me to the Temple of the God of War? Or to the army somewhere? 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 is that their relationship with the God of War Temple is not very good, so they cannot conduct experiments openly. Are you looking for an army? Recently, the area has been quite peaceful, and there have been no major conflicts between the lords...
Counting on that 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..." Gretel answered completely lacking confidence. By the way, cats have different blood types, so do dogs, and many animals do - but how many blood types do these animals have, what proportions are there, and how many samples are needed to determine the different blood types?
Grete had no idea. Hey, I think 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, if you catch two cats and transfuse blood randomly, there will basically be no problem...
Then there is no experimental value!
He himself has no confidence, and it is even less likely that others will agree. All the black-robed mages in the room shook their heads in unison. Their black robes fluttered and their thin, waxy heads shook. The scene looked very scary. Shaking and shaking, someone suddenly slapped his 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 confused:
"Wait...what the hell?"
What the hell is giving blood to a dead person? ! Your deceased family member needs a blood transfusion. No, your deceased family member still has blood in his veins!
"You don't know this, right?" Archmage Grom said with a smile. Since 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? !
Gretel 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 lazy and use the Cleaning Technique to brush the test tube! - The Cleaning Technique can only be used for the first time, and you have to brush it 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. One 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 shaft made an unpleasant noise. With quick eyesight and quick hands, Gretel repainted two defensive spells for himself and jumped behind Archmage Grom.
****
Let’s lament that 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 kind of blood transfusion is okay", you would try to randomly recruit healthy people to give blood transfusions?
Get rid of the head of the Medical Ethics Committee!
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