Escape From the Library

【Cell Factory-05】

The fibrous tissue in the dermis spread all over the body, and after Yue Xingwen became flat "fibroblasts", they could no longer roll like before, but could glide, and even slip through the gaps of other cells.

Irregular star-shaped cells slid and shuttled around the body like a skateboard, and copied and split in different positions according to the prompts of the course...

Soon, fibroblasts made by Yue Xingwen appeared all over his body.

In order for the students to distinguish between the main body and the replica, after a large number of cells have differentiated, only the main body has eyes, and the other copied cells have only shapes without eyes.

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

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

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

Liu Zhaoqing smiled and said, "How can making a child be so easy?"

Yue Xingwen thought about it too, and said, "Let's keep working hard, everyone. What should we do next?"

Qin Miao said calmly: "Just now the mechanical sound reminded me that at the 7th week of pregnancy, the fetus's five sense organs begin to appear."

Lin Manluo said excitedly: "Facial senses, is it up to 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 stick together into a small meat ball. Let's take a look, is there any passageway representing the limbs nearby? "

Lan Yarong quickly discovered the surrounding passages and said, "I have them here. Just now I saw a group of bulging parts in the upper left corner, upper right corner, lower left corner, and lower right corner. They should be the rudimentary 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. 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 in order for the child to be born smoothly, he didn't want to lose the chain at this time, and immediately said: "No problem, everyone starts working!"

As soon as the words fell, everyone saw the star-shaped Yue Xingwen, like a slide, quickly slid 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 finishing, Yue Xingwen continued to create the muscle tissue below the dermis.

Unlike "fibroblasts", "myocytes" 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) is attached to the bone and distributed between the bone and the skin; smooth muscle is usually distributed in the wall of the gastrointestinal tract.

There are a lot of striated muscles in the limbs that Yue Xingwen will build.

As a result, Yue Xingwen turned into "trapezoidal" muscle cells one after another during differentiation.

Everyone soon saw that the flat trapezoidal Yue Xingwen slid back and forth on the limbs of the fetus. He said while working: "The baby's arms and legs are so short, they are curled up in a ball, and they are quite cute."

Lan Yarong suddenly said: "Wait a minute, I seem to see that the baby has a long tail besides 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 suppressed 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 twelve of us, and it can awaken the strongest demon blood in history at birth. When the demon king comes, Unify the Three Realms?"

Zhang Xiaoqing asked in a young voice: "Why is it the demon race? Can't it be the fairy race?"

Ke Shaobin said earnestly: "Because, if the twelve of us are placed in a cultivation novel, we must be the big villain."

Everyone: "..."

Xin Yan said lightly: "Do you want to consider changing your major from the computer department to learn screenwriting?"

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

Ke Shaobin smiled and said, "I'm just kidding, our baby can't be a monster."

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

Liu Zhaoqing said: "That's right. In fact, all of us will have a tail during embryonic development. This is a gene left to us by our ancestors, but after a long period of evolution, human beings no longer need a tail. When the fetus develops, all organs will It grows bigger and bigger, only the tail grows longer and smaller. When it is about 3 months pregnant, the tail will completely disappear."

Xu Yishen agreed: "The scientific explanation is that the part of the gene in charge of tail development is turned off, which makes the tail unable to continue to grow and eventually degenerates and disappears. In other words, the tail gene still exists in our body, but it is not expressed during fetal development. come out."

Lan Yarong suddenly realized: "So that's the case. I said why besides hands and feet, there is also an extra tail!"

Lin Manluo asked: "Is it up to me next? Start making facial features?"

Liu Zhaoqing warned in a low voice: "The facial features are all delicate, Manluo, you should be careful. At present, you can only distinguish the eyes, nose, nostrils, and ears. The baby's eyes are still closed. Just follow the course instructions and reserve a place."

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

She rolled all the way to the baby's face, and she saw the eyes, ears, nose and other markings. Lin Manluo filled in according to the prompts and asked, "Do you think the baby looks better with single eyelids or double eyelids?"

Yue Xingwen said without hesitation: "I think single eyelids look good."

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

Yue Xingwen said: "Yes, among the handsome men and women around me, double eyelids are very common, while single eyelids are special and more recognizable. I think Ping Ce is quite handsome."

Jiang Pingce: "...Thank you."

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

The liberal arts students were a little confused, but they didn't know what was going on.

Lan Yarong concluded: "That is to say, whether the child will have single eyelids or double eyelids in the future has already been determined in the genes. We can't change it casually, right?"

Xu Yishen: "Yes."

Lin Manluo felt a little regretful: "Okay, then I'll make the baby's eyes first."

Eyes, ears, nose...

Sister Lin worked hard for a while, and finished building the prototype of the fetus' facial features. Immediately afterwards, Liu Zhaoqing began to build the brain and pituitary gland in the nervous system.

Although the pituitary gland is a very small part, it is very important to participate in the process of mediating various hormones in the whole human body.Brother Liu is a medical student, and he quickly found the location of the pituitary gland and completed the differentiation without any guidance from others.

The mechanical sound reminded me again: "At the 9th week of pregnancy, all organs, muscles, and nerves of the fetus start to work and develop rapidly."

As soon as the voice sounded, Liu Zhaoqing hurriedly said: "Everyone is working! The endoderm students are also starting to work. The fetal thymus is about to develop, and the thyroid gland will be delayed. Zhang Xiaonian, go to the thymus first."

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

Liu Zhaoqing said: "At the beginning, the development is in the pharynx, and it descends to the anterior mediastinum at about 12 weeks, which is the position before the pulmonary artery, aorta and superior vena cava. You go all the way forward and find the few organs where Xu Yi studied. A major vessel, and further up, you should be able to see the sign there."

Zhang Xiaonian knew nothing about medicine, and immediately rolled forward after hearing Senior Brother Liu's instructions, and sure enough, he saw the sign Senior Brother Liu mentioned above the three blood vessels.

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

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

Even after birth, the baby cannot eat delicious food immediately, and has 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 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 responsible for the respiratory system developed from the endoderm. In fact, when Xu Yishen started to build blood vessels, he was ready to build lungs and bronchi. Now that he received instructions, he immediately began to work actively.

The four classmates of Endoderm got busy.

Of course, the students of ectoderm and mesoderm cannot be idle.

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

The busy senior sister Lan worried about the baby's skin.

Yue Xingwen is also not easy. He is responsible for the dermis and muscle layers under the epidermis, sometimes turning into stars, sometimes turning into trapezoids, sliding back and forth between several layers of passages...

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 lay capillary networks, creating more and more blood cells.Jiang Pingce began to build the ureteral access of the urinary system, and the organizational structure of the kidney also needed to be further improved.

Qin Lu is in charge of the connection between some internal organs and muscles, and helps mesomorphic students when they are too busy.

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

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

After hearing this mechanical voice, everyone was stunned.

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

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

Liu Zhaoqing said: "If male organs appear, it is a boy, if not, it is a daughter. Ping Ce, aren't you in charge of the genitourinary system? Why don't you take a look?"

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

Lan Yarong sighed with some regret: "Boy, he must be very naughty after birth. I like my daughter."

Ke Shaobin said: "Is this intentional by the library? Let's make a boy. After he is born, he will go to the house, climb a tree and get injured, and we have to save someone?"

Everyone: "..."

Making children is so tiring, raising them is even more tiring, right?