In a transparent square glass box, a snail was slowly squirming.

It is a snail that is distributed in various parts of the country.

It originally lived in dark and humid places, such as grasses, ditches, etc. It likes damp heat, is also tolerant of drought and cold, and can also float on aquatic plants and water surfaces. It feeds on humus, as well as lichens, fungi, moss, algae, young buds and tender leaves of plants, etc.

The shell size of amber snails varies greatly, usually long oval, with 3-4 snail layers, shell height 5-15 mm, width 3-8 mm, thin chinia, light yellow or yellow-brown, body transparent or translucent, and shiny.

But the two tentacles in the glass box were particularly swollen. Compared with normal amber snails, they were like two abominable hyperplasia.

Moreover, in its transparent body, you can clearly see something in it, but it is not its internal organ.

Suddenly, its squirming speed increased, and it squirmed wildly at a speed that snails usually find difficult to achieve.

Its two swollen tentacles reflected bright light, like two drill bits, constantly rotating and constantly flickering.

"Students, this is a snail infected with parasites. The color and light you see are actually a large number of parasites squirming in its body."

In this university biology class, with the teacher's words, the teaching screen played a slow-motion image with ten times enlarged. It was still such an amber snail. The students all saw the creepy details, which was indeed not a natural luster.

The snails are filled with parasites, one by one, and they keep pushing and jumping.

"That's a double-disc fluke, which changes the body shape of the snail and also controls the snail's brain."

After changing the images on the teaching screen, the double-dish flukestones are a series of parasites that look very large under the camera.

Some of these biology students frowned, some were curious, and some had already understood something.

"First, the snail ate the eggs of the double-dish flukesome." The middle-aged man's teacher said, "The parasite just entered the host."

"Then the worm eggs will develop into sporangia, mainly parasitizing in the snail's liver. At this time, the snail still has no abnormal manifestations. Maybe even it does not know that there are insects in its body, and the nutrients it has been stolen by the parasites after working hard to eat are constantly stolen by the parasites. We are not snails, so we are uncertain about this, and we do not know their specific feelings."

There was a chuckle in the classroom, but the students quickly calmed down.

They looked at the simulated images of the screen to demonstrate how the parasites grow cercariae and how they grow stronger. Then they extend outward from the snail's body to the branch and enter the two antennae, and then form a complete sporacle, full of larvae.

It is them that make the snail's tentacles expand continuously, so that they cannot contract normally, and can only hang brightly outside.

Looking at these scenes, some students really felt that this snail parasitized by double-dibodendrons is too pitiful.

"Once you enter the snail's eye stalk, the double-disc flukes begin to have the ability to control the host. The snail originally likes to move at night, but after being controlled, it will become active in a place with sufficient light during the day, and its movement speed is three times that of a normal snail. This may be the physiological limit of the snail."

The teacher instructed the lesion snail in the glass box on the podium, its tentacles flashing like neon lights.

"How does the double-disc fluke control snails have not been studied yet. Students, let's see you in the future.

But this parasite is really smart. They make the snail colorful, make it lose its sense of fear, and walk in the sun with a swagger. It is so eye-catching that it can also control the snail to climb higher leaves, especially conspicuous places. For what? Just to let the birds see. When the birds see something shiny there, it is a worm shape, and it flies over and eats it in one bite. It is actually the snail's tentacles, all of which are double-dish flukes. "

The teacher paused, picked up the chalk and wrote it on the blackboard, emphasizing: "Aggressive mimicry, here is the benefit of the parasite."

Aggressive mimicry, a biological concept, in short, biological use mating commitments, false food and other means to deceive prey.

For example, Nepenthes simulate flowers to trap insects that collect honey. Eating, surviving, and reproduction is the wisdom of nature.

"The snail is the first intermediate host." The teacher said while writing to the blackboard: "Birds are the second intermediate host. After the double-disc flukestone enters the bird's body, they will reproduce there. Then the eggs are excreted with the bird's bowel movements, and the bird's bowel movement is eaten by other snails... This cycle repeats itself."

The students had goose bumps when they heard it. The double-dish flukes used snails as fake food, and the prey was birds.

A small parasite is only a slight size, but it has such a sinister and weird trick.

And it can clearly distinguish between day and night, high and low, conspicuous and hidden.

Whether it is wisdom or instinct, it is amazing.

"Teacher, can double-dibacteria control birds?" asked a male student.

“There is no evidence that this is happening.”

"Can it enter the human body?"

"This is not a human parasite." The teacher smiled and said, "Our human body is more complex than snails and birds. It has a stronger defense system that can block double-dish flukes. But we also have a lot of parasites to deal with, and it is also difficult to deal with intimidated worms. I know what you want to ask, no, there is no parasite that can control human thoughts and behaviors."

"Maybe there is still a name called Money." The teacher said again, "The English name is Money, and the Latin scientific name is Aes."

There was a burst of chuckling from students in the classroom.

Indeed, humans are not snails, and parasites are not so easy to control.

At the same time, in the transparent glass box, the snail was squirming and squirming wildly for a second.

...

Doudou, Doudou, the phone is connected.

"Hey, is it Wang Jiawei's mother? I am Li Yuhao's mother. Yes, our son is from the same dormitory."

"Hello, Mom Yuhao, what are you looking for?"

"That's right. Yuhao told us last night that he and a few classmates went to your house to have a party and spend the night there. I called him in the morning, but no one picked him up. It's almost noon now, and no one picked him up, and he hasn't returned home yet. I also have Jiawei's number here, and there are several other classmates. I called them, but no one picked him up..."

"Is that true... Yuhao's mother, Jiawei's father and I are out of town these days. Don't worry, young people must have had a party until late. Today, they don't have to go to school all night. Maybe they haven't woken up yet, so no one answered them."

"I think so, but it's always a bit strange... These children haven't posted a message on Moments. When did they meet in the past?"

"Well...why, why don't you do that? I asked the community property management to send someone to my house to see what's going on? Maybe I'm drunk?"

"Okay, Mom Jiawei, then I'll bother you."

"Hey, why are you polite? This is also a party held by Jiawei."

The call is over.

Less than half an hour later, the call was connected again.

"Hey, Yuhao's mother? The security guard went to see it just now. No one was at home. I also found that my garage was driven. I looked at the picture and an MPV was driven away. I asked the security guard to check the surveillance of the community. The car was driven out last night. Jiawei drove, Yuhao and the others were all in the car..."

"What... Jiawei can drive? Where did they go?"

"I don't know yet. Yuhao's mother should be fine. Young people are just crazy when they go out. Let's not be confused."

"Stop talking, call the police, let's call the police quickly."

"Wait, this matter has not yet reached that point, don't make a big deal... Yuhao's mother, don't think it's the car that Jiawei drove, I think I only consider my son. What if they do bad things? We don't know. I mean, if, if they touch marijuana and ecstasy, calling the police will destroy them. We have to think about the children."

"Hey! You... aren't they safe now? We must consider the first thing we have to think about! My Yuhao is not the kind of person who can touch drugs."

"I'm going to give an example, slow down, Yuhao's mother, please look at Moments! I saw that Jiawei had just posted a Moments. Do you see if Yuhao posted it?"

"Ah, let's see, yes, yes, yes! Yu Hao also sent one. This child is here, why didn't he answer the phone? He didn't call back to report a message. It scared me to death. Oh, it's true. What does this circle of friends mean...'I saw God, I am the incarnation of it in the human world.'"

"…Jiawei also said this: Did they meet any idol at a concert?"

"Maybe it, this kid... Jiawei's mother, then this is the case first. I'll call Yuhao. When he gets home, I'll see if I won't beat him."
Chapter completed!