Escape the Library

【Cell Factory-05】

The fibrous tissue of the dermis is all over the body. After Yuexingwen becomes a flat "fibroblast", it can no longer roll like before, but can slide, and even slip through the gaps of other cells.

Irregular stellate cells slide and shuttle all over the body like riding a skateboard. According to the prompts of the course, they replicate and split in different positions...

Soon, fibroblasts made by Yuexingwen appeared all over the body.

In order to allow students to distinguish the original body from the replica, after a large number of cells are differentiated, only the original body has eyes, and the other copied cells have only shapes and no eyes.

In addition to "fibroblasts", there are also "macrophages", "mast cells" and so on in the dermis. With the experience of making fibroblasts this time, Yuexingwen's work has become much smoother.

He began to work on the whole body of the fetus, like a craftsman who sewed and mended everywhere, continuing to build the dermis layer under the epidermis layer made by Senior Sister Lan.

Time passed by, and Yue Xingwen finally completed the construction of the dermis layer. He was so tired that he lay on the ground, he didn't want to move, and his voice was sickly: "Finally, it's done, it's better than running tens of thousands of meters. The marathon is even more tiring..."

Liu Zhaoqing smiled and said, "How can it be so easy to create a child?"

Yue Xingwen thought about it too, and said, "Let's make persistent efforts. What should we do next?"

Qin Miao said calmly: "The mechanical sound reminded me just now that the facial features of the fetus began to appear at the seventh week of pregnancy."

Lin Manluo said excitedly, "Five senses, is it time for me? Let me pinch the baby's eyes, nose, and mouth?"

Liu Zhaoqing added: "At this time, the hands and feet of the fetus should also appear, but the fingers and toes have not been clearly distinguished, and they have become a small lump of flesh. Let's take a look. Is there a passage that represents the limbs nearby? "

Lan Yarong quickly discovered the surrounding passages and said, "I have it here. I saw a bulge in the upper left corner, upper right corner, lower left corner, and lower right corner. It should be the embryonic limbs of the fetus, right?"

Liu Zhaoqing nodded and said, "That's right. Manluo, you go to the head to create the baby's facial features. Senior Sister Lan and Xingwen continue to work hard, copy the cells, and fill the skin, dermis and muscles of the baby's limbs."

Although Yue Xingwen was very tired, but for the child to be born smoothly, he was not easy to lose the chain at this time, and immediately said: "No problem, everyone starts to work!"

As soon as the words fell, everyone saw the star-shaped Yuexingwen, like a slide, sliding quickly to the position that Senior Sister Lan said, and cooperated with Lan Yarong to create cells in the epidermis and dermis of the skin.

After the creation, Yuexingwen continued to create the muscle tissue below the dermis.

Unlike "fibroblasts", the "muscle cells" of the muscle layer include striated muscle cells and smooth muscle cells. Among them, striated muscle cells have the strongest contractility and are trapezoidal; smooth muscle cells have weaker contractility and are spindle-shaped. Striated muscle (also called skeletal muscle) attaches to bone and runs between the bone and skin; smooth muscle usually runs along the walls of the gastrointestinal tract.

The limbs that Yue Xingwen wants to build have a lot of striated muscles here.

As a result, Yuexingwen became one after another "trapezoid" muscle cells during differentiation.

Everyone soon saw that the flat trapezoidal Yue Xingwen was sliding around the fetus's limbs. He said while working: "The baby's arms and legs are so short, curled up in a ball, it's quite cute."

Lan Yarong suddenly said: "Wait a minute, I seem to see that the baby has a long tail in addition to his hands and feet?! Could it be that our baby..."

She paused slightly and said seriously, "Is it a monster?"

Everyone was stunned when they heard this.

Ke Shaobin held back a smile and said, "Senior sister, if we give birth to a monster, it will become a fantasy drama. This baby is a mixture of the genes of the twelve of us, and will awaken the strongest demon bloodline in history as soon as it is born. Unify the Three Realms?"

Zhang Xiao Young asked in a low voice, "Why is it a demon? Can't it be a fairy?"

Ke Shaobin said seriously: "Because, the twelve of us in the novel of self-cultivation must be the villain."

Everyone: "..."

Xin Yan said lightly, "Do you want to consider changing your major from the Computer Science Department to study a screenwriting?"

Everyone thought that Xiao Ke did have the talent to be a screenwriter.

Ke Shaobin said with a smile, "I'm joking, our baby can't be a monster."

Qin Miao calmly explained the problem of the tail: "It should be that the atavistic feature appeared, and the ancestors of human beings had tails."

Liu Zhaoqing said: "That's right. In fact, all of us have tails during embryonic development. This is a gene left to us by our ancestors, but after a long evolution, humans no longer need tails. When a fetus is developing, all organs will be It gets bigger and bigger, only the tail gets longer and smaller. By about 3 months of pregnancy, the tail will disappear completely."

Xu Yishen agreed: "The scientific explanation is that this part of the gene responsible for tail development is turned off, causing the tail to not continue to grow and eventually degenerate and disappear. That is to say, the genes for the tail still exist in our body, but they are not expressed during fetal development. come out."

Lan Yarong suddenly realized: "So that's how it is. I said why there is an extra tail in addition to hands and feet!"

Lin Manluo asked, "Is it coming to me next? Start making facial features?"

Liu Zhaoqing whispered: "Five senses are all meticulous work, Manluo, be careful. At present, you can only distinguish the eyes, nose, nostrils, and ears. The baby's eyes are still closed. Follow the instructions in the course and reserve a place."

Lin Manluo blinked seriously: "Okay, then I'll go."

She rolled all the way to the position of the fetus's face, and sure enough, she saw the eyes, ears, nose and other labels. Lin Manluo filled in according to the prompt and asked, "Do you think the baby's single eyelid is better, or double eyelid?"

Yue Xingwen said without hesitation: "I think single eyelid looks good."

Most people like double eyelids, why does Xingwen prefer single eyelids? Lin Manluo thought for a while, and quickly understood: "You mean, a single eyelid like Jiang Pingce?"

Yue Xingwen said: "Yes, among the handsome guys and beauties around, double eyelids are very common, but single eyelids are special and more recognizable. I think Pingce is quite handsome."

Jiang Pingce: "...Thank you."

Xu Yishen smiled and said: "Double eyelid is dominant gene Aa or AA, single eyelid is recessive gene aa, autosomal genetic inheritance. If both parents have double eyelid, the child has a high probability of double eyelid; both parents are single eyelid, the child is 100% The probability is a single eyelid. If there is a single or a pair, there are all kinds of possibilities.”

The liberal arts students were a little stunned, but they didn't realize it.

Lan Yarong concluded: "In other words, whether the child will have single eyelid or double eyelid in the future has long been decided in the genes, we can't change it randomly, right?"

Xu Yishen: "Yes."

Lin Manluo has some regrets: "Okay, then I'll make the baby's eyes first."

eyes, ears, nose...

Sister Lin was busy for a while, and finished building the embryonic facial features. Following that, Liu Zhaoqing began to build the brain and pituitary gland in the nervous system.

Although the pituitary gland is a small part, it is very important to participate in the process of mediating various hormones in the entire human body. Brother Liu studied medicine and did not need guidance from others. He quickly found the position of the pituitary gland and completed the differentiation.

A mechanical voice sounded again in his ears: "At 9 weeks of pregnancy, all the organs, muscles, and nerves of the fetus begin to work and develop rapidly."

As soon as the voice sounded, Liu Zhaoqing hurriedly said: "Everyone is working! The students in the endoderm have also started to work. The thymus gland of the fetus is about to develop, and the thyroid gland needs to be delayed. Zhang Xiaonian, you go to the thymus gland first."

Zhang Xiaonian was dumbfounded: "Where exactly is the thymus?"

Liu Zhaoqing said: "The pharynx develops at the beginning, and it descends to the anterior mediastinum at about 12 weeks, that is, the position in front of the pulmonary artery, aorta and superior vena cava. You go all the way and find the few Xu Yi's advanced studies. The great vessels, further up, should be able to see signs there."

Zhang Xiaonian didn't know anything about medicine. After hearing Brother Liu's instructions, he immediately rolled forward all the way. Sure enough, he saw the sign mentioned by Brother Liu above the three blood vessels.

Ke Shaobin excitedly said, "Is my digestive system still working?"

Liu Zhaoqing said: "The fetus' digestive system develops the slowest. You don't have to worry. First, make the prototype of the stomach and intestines. The liver will not start to work after 13 weeks, and the gastrointestinal tract can only maintain simple peristalsis. "

Even after the baby is born, he can't eat delicious food immediately, and he needs to be breastfed for a period of time. The baby's digestive function is very poor, let alone the fetus, which basically relies on the mother's body and blood circulation to provide nutrition.

Ke Shaobin didn't need to give directions, and quickly found the location of the gastrointestinal tract.

Together with him, Xin Yan is in charge of the liver, pancreas and other organs.

Zhuo Feng took the initiative to be in charge of the respiratory system developed from the endoderm. In fact, when Xu Yishen started to build blood vessels, he was preparing to build lungs and bronchi. Now he received the instructions and began to work actively.

The four classmates of Endoderm got busy.

Of course, the ectoderm and mesoderm classmates can't be idle either.

Since the fetus grows rapidly from this week, Lan Yarong needs to constantly fill in the newborn skin of the fetus, and every time the skin grows a little more, she has to run back and forth between the five layers of epithelial cells, sometimes becoming columnar, Sometimes it becomes a spindle, sometimes a flat cell...

The busy senior sister Lan was heartbroken for the baby's skin.

Yue Xingwen is also not easy. He is responsible for the dermis and muscle layers under the epidermis. Sometimes it becomes a star, sometimes it becomes a trapezoid, and slides between several layers of channels...

The baby's sweat glands also began to appear, and Qin Miao dealt with various sweat glands and sebaceous glands in the dermis.

Liu Zhaoqing also has a heavy task, starting from the brain and gradually spreading the baby's nerves all over the body.

Xu Yishen began to spread the capillary network, making more and more blood cells. Jiang Pingce began to build the ureteral passage of the urinary system, and the organizational structure of the kidney also needs to be further improved.

Qin Lu is responsible for the connection between some internal organs and muscles, and helps the mesomorph classmates when they are too busy.

The 12 people are busy, like working hard in the workshop of a factory. With everyone's efforts, the fetus gradually has an initial "human" shape, and the internal organs, tissues, nerves and blood vessels are also initially formed.

Then, everyone encountered a problem: "At 11 weeks of pregnancy, the fetal **** begin to develop."

After hearing this mechanical sound, everyone was stunned.

Then, Liu Zhaoqing asked a serious question: "By the way, we have been busy for so long, is the baby born a boy or a girl?"

Xu Yishen said helplessly: "It's a male or a female. This is determined by the genes when the fertilized egg is formed, right? It is impossible to change the **** suddenly in the middle of development. At 11 weeks, 12 weeks, the **** will start to develop at this stage, just look at What kind of **** did the baby have?"

Liu Zhaoqing said, "If there is a male organ, it is a boy, and if it does not, it is a daughter. Pingce, aren't you in charge of the genitourinary system? Would you like to take a look?"

Jiang Pingce said indifferently: "Well." He was at the position of the kidney at this time, rolled over quickly to take a look, and found a familiar prototype of the organ that was very similar to his own, and said calmly: "It's a boy."

Lan Yarong sighed regretfully: "Boy, it must be naughty after birth, I like my daughter."

Ke Shaobin said, "Is this intentional in the library? Let's make a boy. After he is born, he goes to the room, climbs a tree and gets hurt, and we have to save people?"

Everyone: "..."

Raising a child is so tiring, but raising a child is even more tiring, right?