Removing more than a dozen drops of blood from Gro's wound and dripping them on a clean silver platter, Richard looked up at the nobles and said, "Next, I will take a drop of blood from each of you to mix it with Gro's blood." This is because there is very little blood in Gro's body now, so it is necessary to find someone who can transfuse him and inject some blood into his body in order to restore his health and save him. So each of you is going to take this test. ”

Blood transfusion?

Not only do you not have bloodletting, but you also have to have a blood transfusion?

Sure enough, it's a heresy, it's a wizard's spell!

But this is the time to show faithfulness.

"Each of us can give the prince a blood transfusion!" said something in the crowd, who didn't know who said this, and then caused many people to agree, "Wizard, if you can save Prince Gro, you can use our blood." ”

Richard 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 simple. Richard pouted, "Blood and blood are not exactly the same. Generally speaking, blood is not just a red liquid, it has a lot of other substances in it. If some substances are different, the blood will produce ...... Well, toxic, so the blood can't be transfused casually. ”

This is explained by Richard in words that a group of people can understand, after all, the other group of people are not the maids, craftsmen, and soldiers of the palace.

In the royal palace, no matter how complicated Richard's words are, the maids, craftsmen, and soldiers will also try to understand it, and they can cultivate some vague scientific thinking, and then select some better people from it to train and use.

So if it was in the palace, facing some ordinary soldiers and craftsmen, Richard would say in detail, some blood components, explain plasma, blood cells, etc., and see how the other party reacted.

In the face of the maid, she will explain more, and will say the reaction of some red blood cell surface-specific antigens (agglutogen). For example, the division of ABO blood group, such as what kind of agglutina is in blood type A, what kind of lectin is in the serum, and what kind of blood will not be agglutinated when transfused, so as not to cause vascular blockage and hemolysis, etc. Even if the maid doesn't understand, it doesn't matter, there's nothing wrong with remembering first.

But now, in the face of a group of strange aristocrats, there is obviously no value in cultivating and utilizing, and Richard is too lazy to explain too much of the scientific knowledge in it, just use some of the most simple words to understand.

But even so, everyone was stunned, surprised by what Richard said, and then many doubts arose.

"Is the blood poisonous?"

"How can blood be poisonous?"

"Isn't blood just blood, how can there be anything else?"

"Blood ......"

This is a disadvantage of not being explained in detail, 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, whether the other party understands it or not, it will definitely make the other party shut up.

But now, Richard didn't want to waste any more time to remedy anything, and said directly: "You don't need to figure out why blood is poisonous, you just need to know that I did it for a reason." If you don't want Gro to die, do what I say, and if you want him to die, just say nothing. ”

"Forehead ......"

Everyone looked at each other, not calm, and finally stepped forward and began to drip blood.

Suddenly Richard thought of something, and asked out loud: "By the way, who in your group is a close relative of Groh? ”

Everyone was silent for a second, and then looked at one person in the crowd.

Under everyone's gaze was a short aristocrat, trying to maintain his apparent composure, looking at Richard and saying, "I am, what's wrong?"

"Then you don't have to test your blood. Richard said, pausing and speaking affirmatively, "You've been ruled out." ”

"Ah, for...... Why?" the other party obviously did not understand why he, as a distant cousin, had become a special being.

"Are you sure you want me to explain?"

"Well, this ......" The other party thought about it, felt that Richard really explained, but he couldn't understand it, and finally shook his head and said, "Forget it." ”

Richard exclaimed, "You're smart. ”

"Uh. ”

Actually, Richard really explained, and the other party really didn't understand. Because it involves biological knowledge, it is more complicated than blood type.

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

In this way, we can show the love of fathers and mothers, and the filial piety of children and grandchildren. What's more, in this way, you may find out the old news of love many years ago, and then produce bloody episodes such as your son is not your own son, and the nurse is your own daughter.

But in fact, people who dare to have blood transfusions of close relatives under real circumstances can only be said to admire their courage and pity their intelligence.

Modern geomedicine has demonstrated that blood transfusions between relatives are extremely dangerous, especially transfusions of untreated fresh blood between first-degree relatives, and the risk of graft-versus-host disease (GVHD). Once it happens, the mortality rate is as high as 99.9%, and there is basically no need to rescue.

This is because the blood is usually mixed with the donor's lymphocytes. Under normal circumstances, when a patient is transfused, the immune organs will recognize and destroy the lymphocytes in the foreign blood that are different from their own. However, if it is a close relative, because of the similarity of genes, it cannot be recognized, and it is harmless by default, presenting a pseudostate of acquired immunodeficiency syndrome (AIDS).

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

In this regard, Richard did not want to gamble his luck and test how lucky Gro was. If you don't want to do everything well and end up messing up because of graft-versus-host disease caused by a blood transfusion of a close relative, it's better not to do it from the beginning.

With a light breath, Richard looked at the silver platter.

At this time, the nobles had already completed the blood test, and the results were not very good, Gro's blood should be a relatively rare AB blood type, according to the statistics of the modern earth, the rate of this blood type only accounts for 7%, so there is only one match among the people present.

But it's not the worst, after all, in addition to ABO blood group, there are more complex blood group systems, such as Rh blood group system, Hh/Bombay blood group system, Yambai blood group system, P blood group system, Yonetian Fort blood group system, etc.

The rarer Ph blood type is called panda blood, and the prevalence rate of Rh-negative AB blood is only 0.034%. Even rarer, the prevalence of P blood in the P blood group system (P1, P2, Pk1, Pk2 and P) is less than 0.001%, or 1 in 100,000.

If that's the case, Richard can only be considered unlucky.

Fortunately, Gro has not been unlucky to this extent, and there is still salvation.

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