After entering, Wang Xiaoshan finally knew why there were already five of them, but he still wanted the three of them to come over to help. There are 40 cages in each cage, and there are five mice in each cage, which is a total of 200 mice. How long is this going to be, oh my God!

"Today, we have three main tasks, one is to weigh the mice, the second is to collect blood from the medial canthal vein, and the third is to kill them, and then take the organs of the heart and liver," a doctor and brother Wang Xiaoshan did not know said today's task simply and clearly. "You can come and learn how to collect blood from the epicanthal vein."

Then I saw the doctor brother skillfully grab a mouse, while grabbing the essentials of the action, "When catching the mouse, in order to facilitate the next blood collection, you need to fix the head of the mouse, and at the same time expose the mouse's eyeball to ensure that it can not blink, and then pierce the capillary glass tube into the eyelid directly below the eyeball, after there is blood outflow, you can turn the capillary glass tube to accelerate the appearance, and after the collection is completed, you should stop the bleeding of the mouse in time." ”

It's too late, it's too fast, and after that, this mouse has already finished collecting blood, and at the same time, it has also completed hemostasis.

It's just that the person who did it seemed to be unintentional, but people were a little frightened when they saw it, how painful it was!

Wang Xiaoshan wisely chose the task of weighing, after all, among the three tasks, only this is the simplest, and Wang Xiaoshan has been proficient in it before.

It's just that the task is there, and there are so many people, no matter how you choose, there will always be someone to do.

And this very sad person is Zhang Nan. After all, he is one of the few boys out of so many people today.

"Zhang Nan, you can try it," the senior brother said.

"Okay" seemed to be a lot of determination, and Zhang Nan said these two words.

Wearing rubber gloves, three layers on the left and three layers on the right, until he felt that the mice should not be able to bite his fingers, he walked to the cages of the mice that had been gavaged for half an hour. Then hesitantly, he stretched out his hand and swooped at the caged mouse. In an instant, the mouse, which had been well fed and drunk, and was resting, immediately began to flee.

Zhang Nan hurriedly took back his hand that had not been fully stretched out. Then he looked around in a little panic, and then deliberately glanced in the direction of Wang Xiaoshan, and found that the man didn't notice this, so Zhang Nan put his mind at ease.

"It's okay, it's very simple, haven't you done mouse experiments before?" Obviously, others didn't see it, but the doctor's brother who had been staring at him still saw it.

As soon as he heard this, Zhang Nan immediately looked at Wang Xiaoshan's direction again, there was no way, he could lose face in front of others, but he must not lose face in front of Wang Xiaoshan. After confirming that she didn't pay attention here, Zhang Nan whispered, "I haven't done it, I'm also the first time to catch ducks on the shelves today."

Indeed, in their laboratory, there are only three boys in total, except for Zhang Nan, the other two have their own experiments to do today, and the teacher can only let him come over, and there is a junior sister. Oh, and that sister is now learning to dissect mice and take hearts and livers. Look at her skillful operation, she has already gotten to it.

Looking at Wang Xiaoshan, whether it is grasping or gavage, he is very skilled, and he told others not to cry before he lost his nose, which is what he looks like he will cry, it looks like a lot! In this way, it seems that only I dare not dare.

As soon as this idea came up, Zhang Nan immediately had the courage to come up, after all, he is a big boy, and he can't be weaker than a girl!

Stretching out his claws towards the mouse in the cage again, regardless of the others, Zhang Nan only stared at the one in front of him, the purpose was to grab its tail and separate it from the mouse tissue.

With the courage in his heart, Zhang Nan successfully grabbed the target mouse, put it on the iron frame, and then followed the example of the doctor's brother just now, and fixed the ears and neck of the mouse with another idle one, and saw that it couldn't blink, so he picked up the capillary glass tube of the narrator and inserted it into the lower eyelid of the mouse. However, no matter how much he turned the glass tube, no blood came out.

Zhang Nan was a little annoyed, and the other hand, because it was too long, the mouse that was originally fixed was now loose.

Well, even if he overcame his intellectual fear, the reluctance hidden in his heart still made Zhang Nan dare not use force, so that he couldn't bleed no matter what.

"Why don't you go for an autopsy, this is simple" The senior brother also saw that this person was really a complete novice.

"It's okay, it's okay, I'm trying" Zhang Nan was a little embarrassed, after all, he was here to help others, but now he hasn't done anything. Of course, he is also a little unwilling, it makes no sense that others can do well, but he can't, he has never been a person who admits defeat.

Brother Doctor didn't say anything, and went about his business.

"Will you be able to, it's been so long, and other mice don't hurt?" Wang Xiaoshan watched from the side for a long time, and only saw this person holding a glass tube and turning around in people's noses, and after turning for a long time, nothing was picked out.

"I, I'm bleeding, it's really bleeding, hurry up, help me get that test tube" Zhang Nan was a little excited, he didn't expect that this time he would succeed. Thinking that just now, he heard Wang Xiaoshan's voice, and his hand shook, and then he successfully collected blood.

Wang Xiaoshan was also a little embarrassed, just now she said that people wouldn't, but before the words fell, this person actually succeeded, and she didn't know what to say for a while.

"What, you're done with a gavage?" Zhang Nan asked.

"It's already half done, these are enough in the morning, and the rest of the afternoon is in the filling" Wang Xiaoshan saw that she didn't mention what she had just done, so she also wisely changed the topic, after all, it was herself who slapped her face.

As for why Zhang Nan didn't mention it again, I'm afraid only he knows the reason, he knows very well that the previous time was lucky, and that success was completely accidental!

"Then you can help, after all, a mouse has to collect blood three times, and these are only the second time every half an hour, and then the third time is collected every other hour" Although it was only successful once, Zhang Nan remembered the process of blood collection very firmly.

However, there is no need for him to say, Wang Xiaoshan is also going to come over to help, although he is a little unbearable, but he can go back to rest as soon as he finishes it, and more importantly, these always have to be learned, after all, he will have this experiment in the future!

Glancing at Zhang Nan and then at the senior brother next to her, Wang Xiaoshan decided to follow the senior brother of the doctor, after all, she still felt that person was a little unreliable.

According to the doctor's brother, Wang Xiaoshan easily grabbed a mouse, and the posture of this grasping was actually similar to the posture during gavage, and only needed to be adjusted slightly.

Then I also picked up a capillary glass tube, thinking in my heart what my sister said when I first learned to gavage with my sister: the faster the action, the less damage the mouse will receive, otherwise, if it keeps tossing, it will also be depressed and irritable.

I didn't think it before, but now, Wang Xiaoshan is deeply aware of this, and thinks that a person wants to collect blood from under your eyelids, but his technique is not skilled, and he always holds a glass tube and turns it around, which invisibly brings a pressure to the person being blood collected. Because you know that blood collection must be collected, and you can't escape it, in this case, you can only do it as soon as possible.

Thinking of this, Wang Xiaoshan's hand holding the glass tube didn't tremble so much, instead of spinning there all the time, while increasing the psychological and physical fear of the mouse, it was better to be quick and ruthless, and finish everything before it reacted.

Then, Wang Xiaoshan was surprised to find that she succeeded! From the time it was caught to the time the blood was collected, it took less than 15 seconds.

Next, Wang Xiaoshan got faster and faster, and in the end, a mouse completed this operation in less than ten seconds.

"You are so ruthless" Zhang Nan said with some envy and sincerity, "It's also very powerful."

"Anyway, it's all going to be picked, the faster, the less damage it will do to mice" Wang Xiaoshan didn't care about the previous sentence at all, be ruthless, be ruthless, and when you should be ruthless, you must be ruthless. "But how do I think you're about to cry?" Wang Xiaoshan is pure nonsense.

"You're taking a closer look" Zhang Nan pointed to his eyes and said to Wang Xiaoshan, "Oh, by the way, you are so short, you can't see it if you want to, don't have any water stains dripping on you, but don't worry, it's not my snot, it's not tears, it should be my saliva."

The two of them immediately began to burst into flames, and with the sound that only the two of them could hear, they were talking crackling and flashing, and they really wanted to knock each other down.

"It's basically the same in the morning, and the rest of the afternoon is done, the junior sister has just ordered a meal, let's eat and rest for a while, and then continue" The senior brother of the doctor looked at the last mouse dissecting the night, and beckoned everyone to rest in the lounge.

"I see, you better not eat it, after all, you haven't done anything in the morning, if you eat this meal, I'm afraid you will have indigestion" Wang Xiaoshan said ill-intentionedly.

"Then you save your share for me, and I won't be embarrassed, okay? Senior sister" Zhang Nan said the last two words very seriously, obviously, he was emphasizing the identity of the two, he is a senior brother, be polite to the senior brother, you can't commit any offenses, you have to respect!

"I'm sorry, senior brother, there are many capable people" Wang Xiaoshan's senior brother also said the same gritted teeth! This person is also a little embarrassed, he still wants to eat her food, he didn't do anything in the morning, it's really embarrassing!

The two of them followed everyone to the back of the crowd, you stared at me, I stared at you, and no one let anyone.

Walking into the lounge, Wang Xiaoshan wanted to sit next to Lin Lin, but as a result, everyone had already sat down in the order in which they came in, and there were only the last two positions near the door left in the lounge, and there was no choice, Wang Xiaoshan could only sit with Zhang Nan.

It seems that the workload in the morning is too much, in the lounge, everyone eats the food in front of them, no one speaks, Wang Xiaoshan naturally won't say anything, she eats her own food quietly, thinking that when everyone rests for a while, she can go outside to breathe. After all, I was in the animal room all morning, and it was warm, but the air was not circulating, and it was really stuffy.

After putting away the tableware, Wang Xiaoshan took the initiative to take on the task of throwing garbage outside, so that going out is not only breathable, but also throwing garbage, killing two birds with one stone, and others can't see anything.

However, who can tell her what is going on with this person who has been following her all along?