ask sword 2

Chapter 68
"."

Yan Yundang stared at Li Ang who was calm and calm, and suddenly smiled: "It's interesting. Is your kid a doctor?"

The housekeeper at the side was startled when he saw Li Ang put on a wolf hair beard for himself, and he was afraid that Li Ang would say something strange that would make Yan Yun angry, so he said quickly: "Li Ang Xiaolang is a candidate for this year's school, No. 2 in the first exam, Imperial subjects, arithmetic, Danqing, and herbal medicine are all top-ranking."

"Oh?"

Yan's father and son raised their eyebrows at the same time, Yan Yundang glanced at Li Ang up and down, and said solemnly: "It's all about herbal medicine, with your physique, can the royal family be ranked first?
Is there no one in our Yuguo military mansion? "

"Ha ha."

Li Ang smiled slightly, "The Royal Division pays attention to the unity of the people and horses, and the Zaohong Ma and I worked together to win the first class."

"Well"

Yan Lin groaned. Riding all year round will inevitably leave traces on his palms and legs. Li Ang doesn't seem to be able to outperform those Hu people who grew up on horseback since he was a child.
But the school exams have always been fair and open, so he couldn't believe it.

"Father, do you want him to try?"

"."

Yan Yun gave his son a sideways glance, and wanted to scold again, but seeing the worried expression on the eldest son's face that was no longer young, his heart softened and he sighed: "Forget it, sigh. , just try it."

Yan Yundang sat on the chair with a golden knife, with the palm of his left hand spread out on the table, waiting for a pulse.

Li Ang was also polite, pressed the wolf's beard above his lower lip, stepped forward, checked his pulse for a while, and then asked his family a few words, and then physically examined the upper abdomen and other parts.

'There are many potential causes of jaundice, but there is no fever on the body surface, no epigastric pain, no gastrointestinal bleeding - which rules out viral hepatitis, cholangitis, liver cancer, periampullary cancer and other diseases.

In patients with liver cirrhosis, chronic liver disease faces, spider nevus, liver palms, facial telangiectasias, etc. can be seen - if they do not, it proves that they are not.

And it's not cholestatic jaundice -- there's no xanthoma on the eyelids, and according to the family, the patient's urine doesn't turn dark brown.'

Li Ang quickly screened for the cause, and suddenly asked, "How many hours of sleep did the Duke of Guo sleep in a day?"

Yan Yundang's eyes twitched, the corners of his mouth pulled down,

Yan Lin took a deep breath, "During this period, my father slept for six hours a day, sometimes seven hours."

"Drowsy?"

Li Ang frowned slightly and said, "Do you feel that the gait of the lower limbs is unsteady, walking is difficult, and the hands and feet are often symmetrical and numb?"

Before Yan Yundang could speak, Yan Lin took the first step and said, "Yes."

"I understand."

Li Ang thought for a moment, then said slowly: "This is the disease of anemia."

To be precise, it is megaloblastic anemia.

Megaloblastic anemia is a kind of anemia caused by deoxyribonucleic acid synthesis disorder, which can be roughly divided into two types.
One is pernicious anemia caused by lack of vitamin b12,

One is megaloblastic anemia caused by a lack of folic acid (vitamin b9).

The clinical manifestations of these two types of anemia are quite similar. They are fatigue, shortness of breath, dizziness, palpitations, paleness or mild jaundice, and are often accompanied by neurological symptoms such as abdominal distention, diarrhea, glossitis, and weakness of hands and feet.

"Anemia"

Yan Lin's face showed a complicated expression, and she said solemnly, "My father has been taking blood nourishing prescriptions such as Siwu Decoction during this period of time, and it has not improved for a long time."

Li Ang shook his head helplessly and said, "Anemia is both a symptom and a symptom.

The root cause is the stomach. "

"stomach?"

As soon as these words came out, not only Yan Lin was surprised, but Yan Yundang and Qiu Jian also frowned.

"Yes."

Li Ang nodded and changed his words: "When I walked over from the backyard just now, I saw four cages of pigeons in the courtyard?"

Pigeon?

Yan Lin and the others were even more puzzled, completely unable to keep up with Li Ang's thoughts.

What is the relationship between pigeons and stomach?
Do you want to stew pigeon soup?

Yan Lin nodded and said, "Well, those pigeons were raised and played by my son according to the paper about flying pigeons biography published in the Academy's publication."

"I also liked to keep pigeons when I was a kid."

Li Ang said: "But because the family doesn't have enough money, the scale of raising is not as good as that of the Guogong's mansion, and only ten are raised.

Among the ten pigeons, five have full wings and a docile personality.

The five are short-tempered and often peck people. "

Yan Lin and others frowned, not knowing why Li Ang said this section.

Just to illustrate the five?

Li Ang continued to take care of himself: "I like the five docile ones, so I feed them the milled rice that has been finely ground and the bran skin and aleurone layer are removed.

Hate the five grumpy ones and feed them cheap brown rice.

But as time passed, the five docile pigeons who ate rice every day became sluggish.

The pigeons that eat brown rice are as strong as ever. "

"Control Variable?"

Qiu Jian's eyes lit up at the side. Ever since he heard Li Ang's novel statement in the restaurant that day, he felt that many things suddenly became clear.

In the two control groups, only one condition was different, and the rest of the initial test conditions were all the same.

If the final result of the control group is different, then the original different condition is the determinant of the difference.

"Yes, I was trying to figure out why the two groups of pigeons showed different results."

Li Ang said: "I separated five docile pigeons, three were still fed polished rice, and the other two were fed brown rice instead.
Of the five grumpy pigeons, three were still fed brown rice and the other two were fed polished rice.

As time went on, I found that no matter how grumpy or mild-mannered, as long as the pigeons only ate polished rice, there was a morbid state of malaise.

And all sick pigeons can recover from sickness as long as they start eating brown rice again.

From this I determined that brown rice contains some kind of specific substance, when the long-term lack of this substance, the pigeons will get sick. "

This is the experiment carried out in 1911 by the Polish biochemist Casimir Funk, who gave his own definition of the extraordinary substance a name - vitamins
Or rather, vitamins.

(End of this chapter)