Chapter 120 Sword Injury
Blood type theory is one of the important foundations of surgical operations. Only with blood type theory can safe blood transfusion be performed, and many surgical operations can be performed.
Li Ang took out the tools he had prepared in advance from the medicine box he carried with him—a large number of syringes, glass pieces, glass test tubes, and the human frisbee centrifuge he had used in the Duke of Yan's mansion before.
Li Ang took a small amount of blood from the arms of himself, Yang Yu, Li Wei, Zhang Yuyan, and several other schoolmates, put it into a glass test tube, and labeled it.
Then from each test tube, take a small amount of blood each time, two by two, drop it on the glass slide, and mix with each other.
Under the watchful eyes of Dr. Xuegong and the students, the blood in some blood samples began to condense into clusters, while others fused with each other.
For further verification, Li Ang took a small amount of blood from Su Feng and some other volunteers, and experimented again, and the result was still the same.
"Blood donors come from all over the world, and they have never met before coming to the academy. It is too reluctant to say that they are related by blood. Therefore, the blood combination method in the blood test is also wrong."
Li Ang said: "However, it is not enough to just prove this point, it is also necessary to understand why some blood can blend and some blood cannot.
Where is the problem. "
Li Ang used a spinning wheel frisbee human centrifuge to take half of all the blood samples and centrifuge them.
After blood coagulation, the upper layer of light yellow transparent liquid is serum, the middle layer of white solid is white blood cells and platelets, and the bottom layer of red solid is red blood cells.
After the serum was separated, Li Ang placed the serum in a new set of glass test tube containers and labeled it.
The blood cells and serum are then mixed two by two, and the results are tabulated.
"Did you find out? After spinning and centrifuging, a person's own serum and blood turbidity (blood cells) will not react when they meet each other."
Li Ang said: "When the serum of different people meets blood turbidity, sometimes it will react, and sometimes it will not react."
Su Feng asked curiously, "Why?"
"I think that serum and blood turbidity each contain special substances. I call them antigens and antibodies."
Li Ang said: "When the same antigen and antibody meet, they will fight against each other and react. It's like fire meeting firewood.
When different kinds of antigens and antibodies meet, there will be no reaction, and you can live in peace.
If a person's blood turbidity contains A antigen, then his serum will not contain A antibody, but B antibody.
If the blood turbidity contains B antigen, then his serum does not have B antibody, but contains A antibody.
The former is type A blood, and the latter is type B blood. "
"Wait, what about Li Wei's blood?"
Su Feng asked: "His blood turbidity will not react with any kind of serum, but his serum will react with other people's blood turbidity."
"Yes, so in Li Wei's blood turbidity, there is neither A antigen nor B antigen.
Correspondingly, his serum contains both A antibody and B antibody.
This is type C blood.
On the contrary, it is the type A and B blood that contains both A and B antigens in the blood turbidity, but no A and B antibodies in the serum. "
Li Ang wrote and drew on the form, "Roughly speaking, people can be roughly divided into four blood types,
Type A, Type B, Type A, Type B, and Type C.
If type A blood and type B blood meet, the blood will all agglutinate due to the reaction of their respective antigens and antibodies.
When Type A blood meets Type A and B blood, half of the blood clots and half blends.
Is this considered financial? Still not melting?
In the blood test, as long as the blood types are the same, even if there is no blood relationship, they will all blend together without agglutination.
Li Ang's expression is calm and calm. He knows that once the blood type theory is promoted, it will be recognized as true—no one wants a stranger to appear out of nowhere and use the method of blood test to seize his family property.
So the blood type theory must be true, and only true.
Su Feng asked again: "Wait, since people have four blood types, what blood type will be the child born when the parents have different blood types?
If people with type A blood and type B blood get married, they will give birth to type A and B blood, then in the long run, the world should be full of people with type A and B blood. "
"So I was thinking that blood type inheritance may be random."
Li Ang said: "When a person with type A blood and type B blood get married, they can give birth to a person with type A, type B, type A and B, or type C blood.
If a person with type A blood and type C blood get married, they should also be able to give birth to a person with type A or type C blood.
These need to further expand the sample size for verification.
But one thing is certain,
The blood test is completely wrong and has no usability.
If you really take this as the golden rule, you don’t know how many unjust, false and wrong cases and human tragedies will happen. "
Li Ang made the conclusion of this large-scale experiment, Zhang Yuyan in the crowd saluted him gratefully, and Yang Yu also bowed his hands gratefully.
Thanks to Dr. Carl Landsteiner who proposed the blood type theory.
Li Ang waved his hand at them, expressing that they don't need to care, thinking silently in his heart.
With the righteousness of overthrowing the decadent blood test theory as the banner, coupled with the thirst for knowledge of the academicians, the blood type theory should be further promoted soon.
For example, a person with type A blood plus type A blood may give birth to a person with type A or type O blood,
A person with AB blood type plus AB blood type may give birth to a person with A, B, and AB blood types.
Thoroughly confirm the conclusion of the blood test.
"The next step is the actual operation of blood type theory—blood transfusion."
Li Ang said silently: "As long as the fear and ignorance of the people of Yu country can be broken, blood transfusion can be used as a first aid method openly.
Having said that, the monk Jing of Bosihu Temple yesterday, I don’t know if it was a mistake, or what,
The recent **** disaster actually made him half right.”
Tap, tap, tap.
Just as he was thinking, a school servant ran over quickly and said something to Li Wei.
When Li Wei heard the news, his face changed drastically, and he immediately ran to Li Ang's side, "Risheng, Dalang of General Yunhui's family was injured in the martial arts field at home, and he is in urgent need of medical treatment, can you please come with me. "
"Huh? What's going on?"
Li Ang took a leave of absence from Dr. Su Feng, and immediately took the medicine box and followed Li Wei to the west gate of the academy, where General Yunhui's carriage was already waiting.
After getting into the carriage, the servants of the general’s mansion told the truth—General Yunhui Chen Changxiao had a son late, and his eldest son learned martial arts from his family since he was a child, and he was almost old enough to be admitted to the palace.
Just now, Chen Changxiao wanted to test his son's martial arts skills. During the martial arts performance, his son accidentally fell from his horse, his thigh was scratched by the sword, and he bled profusely.
"Sunrise."
"I try my best."
Li Ang comforted Li Wei. General Yunhui Chen Changxiao was Li Wei's recommender. During the school exam period, Li Wei also lived in Chen Changxiao's mansion, and he was called brothers with the sons of the Chen family.
However, people from the Chen family can come to the Academy for help.
This sword wound may not be serious.
(end of this chapter)