Lin had finished circling the round shield worm's body. There was almost nothing edible in the worm's body, except for the multi-cell assemblages that looked like tubes.
These tubes were all over the round shield worm's body, including its arthropods. There were tubes in every corner of the body, except for the area around the esophagus. Lin believed that the tubes around the esophagus were destroyed by the virus.
And all the tubes were connected to the huge thing in the middle. Lin did not know the purpose of this at first. After observing for a while, Lin gave up and began to eat them.
It was not until Lin's devourers bit open these tubes that Lin began to understand their purpose.
Not only were there a lot of blue cells in the tubes, but there were also a lot of fat, grease, various food scraps, and a lot of immune cells.
These immune cells looked different from the ones Lin had seen before. They were small, only a little bigger than the virus. They were probably the reason why the tubes were not affected by the virus. They secreted a sticky substance that prevented the virus from approaching.
But why were the other organs in the round shield worm destroyed by the virus? Lin believed that these immune cells were only responsible for the defense of the tubes. The immune cells responsible for the defense of the other organs were blocked by Lin's troops, causing the other organs to be destroyed.
Lin did not know why these immune cells only stayed in the tubes and did not go anywhere else. But this was not Lin's main concern.
Lin was mainly concerned about the purpose of these tubes. She wanted to see how the round shield worm's cell composition was different from her own cell composition.
These tubes were mainly used to transport nutrients, so they were spread all over the body.
This method of transferring nutrients felt pretty good. Lin's method of transferring nutrients was only to connect the assembled cells to the fat cells and let them transfer nutrients to each other. The speed was much slower. For example, some of the larger Devourers would take a long time to fill their cells with nutrients.
The thing that impressed Lin the most was the huge thing connected to the tubes. After Lin ate a part of it, she found that it was composed of cells similar to the muscle cells of the round shield worm. This meant that this thing could shrink or expand, like a pump, allowing nutrients and cells in all the tubes to quickly flow to all parts of the body.
What was a 'pump'?
Let's not talk about this strange word for now. The structure was indeed very good.
That's right. As long as these tubes were combined into a structure that could circulate, and a place to place food at a certain point, then as long as the muscle structure in the center kept contracting, the circulating cells in the tubes could continuously transport nutrients to the body.
There must be a place where food was placed inside the round shield worm that was connected to these tubes, but Lin could not find it. It was probably destroyed by the virus.
But it turned out that this structure was so effective.
Lin's Devourer was made up of pure muscle cells and lethality cells from her mouth. While its lethality and power against a single cell was very high, it was also consumed very quickly. It was easy for her to enter a state of fatigue, and it would take a long time for her to replenish her energy before she could move again.
The outer skin of an aircraft carrier was a type of cell that was relatively hardened. Because it was hardened, it could not move, so it did not consume any energy. However, the tentacles that moved the aircraft carrier were also purely muscle structures. If it continued to move, it would easily become fatigued.
However, with the addition of this structure, the strength of the muscles might be a little weaker than before, but they could move for a much longer period of time. They could also quickly repair the damaged areas.
It felt pretty good. Although the portion it ate was not even 30% of what Lin needed to repair the aircraft carrier, it felt that killing this worm was worth it. It could learn a lot from this. If the other parts of the aircraft carrier were not destroyed by the virus, it could probably learn even more.
Next time, he must not use the virus.
While Lin was thinking about this, the cells had almost finished eating everything left in the round shield worm's body.
The surrounding ice layer was slowly melting. Lin was almost done repairing the aircraft carrier. Although there was not much left that the round shield worm could eat, Lin had a lot of fat cells stored in her body. It was more than enough to repair the entire aircraft carrier.
The group of green cells in the 'feeding pen' on the aircraft carrier's outer skin had also escaped this crisis because they happened to be on the other side. The round shield worm did not eat that part, and Lin found that they were doing well. As the light shone through the ice layer, they split even more.
Lin was considering whether to make more feeding pens.
But the most important thing now was to figure out the structure of the circulation tube.
After repairing the aircraft carrier, Lin began to form the tube structure that she learned from the round shield worm in the hollow body of the aircraft carrier.
First, it was made up of muscle cells, the central part that could rapidly contract and expand. Lin found that she had a new word to describe this part.
'Heart'.
The heart was mainly divided into two layers. The upper layer was responsible for sucking in the water in the tube and then squeezing it to the lower layer to release it.
Next was the tube structure. Lin made the basic cells form these tubes. They were all interconnected and connected to various positions on the inner wall of the aircraft carrier at the end. They could deliver nutrients to the entire aircraft carrier at any time.
Lin's previous approach was to form some nutrient-absorbing tentacles in the rear half of the aircraft carrier. They were mainly used to devour food and let the cells pass it to each other. The efficiency was not as good as this tube that used water to deliver nutrients.
The tube structure was called 'blood vessel'.
It felt a little strange, but Lin still decided to use this name.
Lin did not plan to put as many cells in the blood vessel as the round shield worm did. This way, there would be more space to transport food.
Speaking of food, Lin formed an oval structure called 'sac'. This sac could open and close and was connected to the blood vessel. Generally, food was placed in the sac. The food in the sac was taken away by the blood vessel cells that passed through the sac and brought to other places to replenish nutrients. At the same time, fat cells could also be thrown in.
Usually, when Lin finished the idea, she also finished the assembly. Now, the interior of the aircraft carrier looked like a space of crisscrossing tubes. However, Lin also felt that this structure had its shortcomings. Once the blood vessel was damaged, the things inside might gush out uncontrollably. In this case, Lin could only stop the heart from contracting and wait for the blood vessel to repair to restore the circulation.
Therefore, Lin must have a stronger defense to prevent the enemy from attacking these blood vessels.
When it came to defense, this was Lin's biggest weakness.
Although the structure of the skin layer could prevent various attacks from single cells, including spikes, venom, and so on, it was easily torn off by the round shield worm.
The round shield worm's outer shell was extremely hard. Although it was not as flexible as the tentacles, no attack could damage its body except for the joints.
Not only did Lin have to study the inside of the round shield worm, she also had to understand its outer shell in detail.
How did it grow such a hard outer shell? Lin's cells were completely unable to reach this hardness, whether it was the excavator or the cone cells.
Perhaps if he kept digging for hard objects like before, he could evolve this ability?
But Lin did not want to wait that long. She wanted to know how these hard shells were made now.
Whether it looked at or bit it, it did not feel like a cellular structure.
She could not understand it at all. She could not eat it, nor could she break it to see what it was made of.
In this case, Lin decided to use it. Perhaps this thing could help her evolve.
How to use it?
It was very simple.
Wouldn't it be fine if Lin allowed her cells to live in the shell? The virus only destroyed the round shield worm's cells. It did not harm the shell at all.
… That's right!
Lin might be able to make it move again, just like when it was alive!
She just had to put the cells in it! Put muscle cells in the arthropods, and the muscles could move. Then put the heart and blood vessel structure in the shell …
Although she did not know what the other organs of the round shield worm were, it did not matter. Lin knew that muscles and nutrients were the foundation of movement.
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