"Where is Meng Fanchao, call him over to me." Zhu Cixuan said to Xia Dechao beside him.

Xia Dechao and his men looked at the little prince making these bottles and jars on the table. No one knew what Zhu Cilang was going to do.

Yuan Xiaoxiao came eight times, and she went back and forth from Li Shouyan's ward to Zhu Cilang's room, hoping for a miracle that would happen.

At this time, Li Shouyan's body was gradually losing heat. This was because of excessive blood loss, and his whole body looked blue and pale. Especially his face, it was even more pale and terrifying.

Yuan Xiaoxiao ignored the difference between men and women and lay on Li Shouyan, hoping to use her body temperature to warm the other person.

Meng Fanchao was quickly called over. As Zhu Cixuan's personal secret guard, he was assigned to the Eastern Palace Guard, responsible for leading the remnants of the mountain deeds and becoming a Qianzheng General.

"Your Highness, what instructions do you have to ask for a villain?" Meng Fanchao bowed.

"The backpack I asked you to bring, take it over."

The backpack was the backpack that Zhu Cilang carried on his body when he came over. At that time, in addition to some crop seeds brought to the villagers, there was also a first aid kit.

Because his hometown is in a remote mountainous area, there are often poisonous insects and other things on the road. His teacher from the Agricultural University insisted that he bring a first aid kit. At that time, our Xiao Zhu couldn't bear to refuse the teacher's kindness, and he was bitten by a five-step snake halfway through the way.

When he took the fourth step, he wanted to open the first aid kit, but he traveled to this parallel world of Ming Dynasty.

Fortunately, the crop seeds are still there, and the first aid kit is still there. All the crop seeds have been handed over to Liu Laifu, the dog eunuch, to plant them in the palace. I don’t know how this dog is growing and whether it is lazy.

On Zhu Cixuan's way to Liaodong, he ordered the secret guard Meng Fanchao to bring this first aid kit to him. After all, the border is dangerous and no one can guarantee whether he will be injured. With such a first aid kit on his body, he will have more life-saving insurance.

I never thought that this first aid kit was useless, but I helped a lot at this critical moment.

Meng Fanchao naturally didn't know what was in this backpack, but the little prince asked him to take good care of himself along the way, saying that he could save his life at critical moments.

As for how to save life, Meng Fanchao didn't know much.

After listening to Zhu Cixuan's instructions, he hurriedly took out his backpack. Zhu Cixuan took out the first aid kit from it. Fortunately, all the rescue equipment was available.

However, this first aid kit contains first aid blanket, snap-on tourniquet, safety pin, triangle scarf, medical elastic bandage, medical degreased gauze, iodine cotton swab, band-aid, medical tape, flashlight, disposable rubber examination gloves, cleaning wipes, sealed bags, first aid manuals, and even several anti-snake venom serums, two syringes and one infusion tube, but there is no serum for blood type measurement.

This is not a war, nor is it necessary to have an emergency blood transfusion when bleeding and sacrificing. Who is so full that he puts several blood type test serums in the first aid kit?

If you blindly give Li Shouyan blood transfusions, Zhu Cilang knows that this is equivalent to playing Russian roulette games. Once you give the wrong blood type, you will definitely die.

"What to do, what to do..." Zhu Cixuan tried hard to cover his head, and the theoretical knowledge he had learned flashed in his mind. Suddenly, he thought of an encyclopedia he had read.

The above clearly records the history of the discovery of human blood types. First, an obstetrician named Brendel wrote a paper on "blondell may treat postpartum bleeding". Later, after a large number of animal experiments, he discovered a very important principle: there is no air in the blood transfusion; finally, in 1825, he finally "takes hands" on people.

The situation was very critical at the time: a pregnant woman was dying due to postpartum bleeding. Brendel called her husband and asked him to stretch out his arms to stand beside his wife. Immediately afterwards, he pierced a hole in her husband's arm and used a funnel to catch the blood, which was connected to a hose, and the blood was transported into the patient's body through the tube.

However, this blood transfusion method can pose a huge potential unknown risk. Some people can cure it, while others will die.

Soon, people discovered that some blood transfusions would cause fever, headaches, facial tremors, urine to turn soy sauce, and even death. So the problem arises, what changes does blood transfusion lead to, and why do patients have such diverse symptoms?

It was not until more than seventy years later that a doctor finally found the answer.

Carl Landsteiner is also a doctor, with six people in his laboratory. He managed to convince other colleagues to take a little blood from each person, and then, like a child playing with building blocks, mixed the blood samples together. A strange thing happened. After the mixing, the red blood cells in some blood samples began to condense into a cluster.

Based on this, Randsteiner speculated that human blood cells also contain antigens, and antibodies exist in the serum. The blood cells and serum of the same person are of course enemies of each other. But if the blood cells contain a antigen, then there will naturally be no A antibody in the serum.

Based on this speculation, Randsteiner filtered six blood samples separately, separated blood cells and serum, and then mixed them in pairs again to draw the experimental results into a table.

In the end, humans finally separated out four blood types: a, b, ab, and type o blood.

Zhu Cixuan knew his blood type, so if he went to a few more people to test, he would be able to detect the other party's blood type faster.

He did it as soon as he said that, Zhu Cixuan bit the pulse belt with his teeth, stabbed the needle in the first aid kit into his left arm, and pulled out half of the blood.

What the ancients avoided was that their parents were given their bodies and hair. Drawing blood was equivalent to taking human life. Seeing Zhu Cilang actually extracting his own blood, everyone was so scared that they scattered and rushed forward: "Your Highness the Prince!"

"What are you doing!" Zhu Cilang drank them, he pulled the needle out of his blood vessel, then dipped it in a cotton swab and pressed it on the wound: "What are you doing? I'm saving my life. Xia Dechao, go and boil water, boil a pot of boiling water."

There are only two syringes. Once the blood type can be detected successfully, the needle can only be disinfected with hot water.

Xia Dechao was shocked: "Your Highness, you are the body of a daughter. This is the emperor, the royal bloodline, I can't be damaged!"

Zhu Cilang was furious: "When is it? Do you want General Li to die?"

His anger alarmed Yuan Xiaoxiao in the next room. She ran over as if she was flying. She was stunned when she saw the scene in front of her, and then stretched out her arms: "Take my blood."
Chapter completed!