Chapter 62 Blood Matching

Take out a dozen drops of blood from Ge Luo's wound and drop them on a clean silver plate. Li Cha looked up at the nobles and said, "Next, I will take a drop of blood from each of you, and come and talk to Ge Luo. Luo's blood is mixed. This is because there is very little blood in Grow's body now, so you have to find someone who can give him a blood transfusion and inject some blood into his body so that he can recover and save him. So each of you have to do this test.”

blood transfusion?

Not only do not bleed? Still need a blood transfusion?

Sure enough, it is a heresy, and it is indeed the magic of a wizard!

But this is the time to show loyalty.

"Every one of us can give blood to the prince!" Somebody in the crowd said this, and then aroused the agreement of many people, "Wizard, if you can save Prince Gero, you can use our blood. "

Li Cha shook his head and said, "Not everyone can do it, only those who meet the requirements can do it."

"Why?" someone in the crowd asked.

"The reason is very simple." Li Cha breathed out, "Blood and blood are not exactly the same. Generally speaking, blood is not a simple red liquid, it contains many other substances. If some substances are different, blood will produce ...Well, it's toxic, so blood can't be transfused casually."

This is what Li Cha tried to explain in words that a group of people could understand. After all, the other group of people were not the maids, craftsmen, or soldiers who used to be in the palace.

In the palace, no matter how complicated what Richard said, the maids, craftsmen, and soldiers would try to understand them. They could cultivate some vague scientific thinking, and then select some excellent people to train and use them.

So if it is in the palace, facing some ordinary soldiers and craftsmen, Li Cha will talk about it in more detail. He will talk about some blood components, explain plasma, blood cells, etc., and see the other party's reaction.

In the face of the maid, he will explain more, and he will tell the reaction of some specific antigens (agglutinogens) on the surface of red blood cells. For example, the division of ABO blood type, such as what kind of agglutinogen is in blood type A, and what kind of agglutinin is in the serum, which kind of blood will not agglutinate, and will not cause vascular obstruction and hemolysis, etc. Even if the maid doesn't understand, it doesn't matter, there's nothing wrong with remembering first.

But now, facing a group of unfamiliar nobles, obviously there is no value to cultivate and utilize, so Li Cha is too lazy to explain the scientific knowledge too much, just use some simple words to understand it.

But even so, everyone was still stunned, surprised by what Li Cha said, and then a lot of doubts arose.

"Is blood poisonous?"

"How can blood be poisonous?"

"Isn't blood just blood, why are there other things?"

"blood……"

This is a disadvantage of not having a detailed explanation, because without the support of a complete system, even if there is a place beyond the cognition of ordinary people, it will immediately cause more doubts and curiosity. In this case, if you directly describe a complete set of theories, no matter whether the other party understands it or not, it will definitely make the other party shut up.

But now, Li Cha didn't want to waste more time to remedy anything, and said directly: "You don't need to figure out why the blood is poisonous, you just need to know that I did it for a reason. If you don't want to let Gero die, just Do as I say, and of course if you want him to die, just pretend I didn't say anything."

"Forehead……"

Everyone looked at each other, became uneasy, and finally stepped forward and started blood testing.

Suddenly, Li Cha thought of something and asked aloud: "By the way, who is a close relative of Ge Luo in your crowd? The immediate collateral relatives within three generations are counted, such as brothers and sisters, cousins, etc."

In the silence for a second, everyone looked at one person in the crowd.

It was a short aristocrat who was watched by everyone, trying to keep his composure on the surface,

Looking at Li Cha, he said, "I am, what's wrong?"

"Then you don't need to test for blood." Richard said, after a while, he said with certainty, "You have been excluded."

"Ah, for...why?" The other party obviously didn't understand why he became a special existence as a distant cousin.

"Are you sure you want me to explain?"

"Uh, this..." The other party thought about it for a while, and felt that Li Cha really explained it, but he couldn't understand it, and finally shook his head and said, "Forget it."

Li Cha said: "You are very smart."

"Forehead."

In fact, Li Cha really explained, and the other party did not understand. Because it involves biological knowledge, it is more complicated than blood type.

Due to the misleading of many film and television works on the modern earth, many people think that when someone is sick and needs blood transfusion, they can use the blood of the same type of close relatives, preferably immediate relatives, descendants or parents.

Only in this way can we show the love of the father and the mother, the filial piety of the son and the virtuous son. More importantly, in this way, you may have discovered the old news of conjugal love many years ago, and then produced a bloody bridge such as that your son is not a son, and a nurse is a daughter.

But in fact, people who dare to transfuse blood from close relatives in real situations can only be said to admire their courage and pity their IQ.

Modern earth medicine has proved that blood transfusion between relatives is extremely dangerous, especially the transfusion of untreated fresh blood between immediate family members, and graft-versus-host disease (GVHD) may occur. Once it occurs, the mortality rate is as high as 99.9%, and basically no rescue is required.

This is because the blood is generally mixed with lymphocytes from the donor. Under normal circumstances, when a patient is transfused, the immune organs will promptly identify and eliminate lymphocytes that are different from their own in the foreign blood. However, if it is blood of close relatives, it cannot be recognized because of the similarity of genes, and it is harmless by default, showing a pseudo-state of acquired immunodeficiency syndrome (AIDS, namely AIDS).

As a result, foreign lymphocytes can survive and proliferate in the patient's body, and then attack various tissues and organs of the patient, causing the patient to have fever, rash, diarrhea, lymphadenopathy, hemolytic anemia, etc., and eventually die.

In this regard, Richard didn't want to gamble on his luck, so he could test how lucky Gero was. Don't want to do everything right and end up screwing up with GVHD from a blood transfusion from a close relative, it's better not to do it in the first place.

Taking a breath, Li Cha looked at the silver plate.

At this time, the nobles had already completed their blood tests, and the results were not very good. Gero's blood should be the relatively rare AB blood type. According to the statistics of modern earth, the proportion of this blood type only accounts for 7%, so the people present There is only one match in .

But it's not the worst. After all, in addition to the ABO blood group, there are more complex blood group systems, such as the Rh blood group system, the Hh/Mumbai blood group system, the Asia-Mumbai blood group system, the P blood group system, and the Midianburg blood group system.

The relatively rare Ph blood type is called panda blood, and the prevalence of Rh-negative AB blood type is only 0.034%. And even more rare, the P blood type system (P1, P2, Pk1, Pk2 and p five) in the P blood prevalence rate is less than 0.001%, or 1 in 100,000.

If this is the case, Richard can only be considered unlucky for Gro.

Fortunately, Gero has not been unlucky to such an extent, and there is still salvation.

Then the next step is to start preparing for blood transfusion.