Introduction to cell culture, splitting cells using trypsin and counting them using a hemocytometer

2024/05/0305:17:05 science 90764

Introduction to cell culture, splitting cells using trypsin and counting them using a hemocytometer - DayDayNews

Introduction to cell culture, splitting cells using trypsin and counting them using a hemocytometer - DayDayNews

13:29

* All content videos are shared, reposted and embedded from YouTube. If there is any violation or error, please contact us to delete it.

science

-196°C, which is a temperature that makes people feel very strange, and this number is the liquid nitrogen temperature at which umbilical cord blood hematopoietic stem cells are safely stored. So, why should umbilical cord blood be stored at this temperature? Can the quality and - DayDayNews

-196°C, which is a temperature that makes people feel very strange, and this number is the liquid nitrogen temperature at which umbilical cord blood hematopoietic stem cells are safely stored. So, why should umbilical cord blood be stored at this temperature? Can the quality and

Can the quality and quantity of umbilical cord blood stored in liquid nitrogen at -196°C be maintained?

05/31 1696

The Fields Medal is an international mathematics award proposed by Canadian mathematician Fields. It is one of the highest international awards in the field of mathematics. Because the Nobel Prize does not include a mathematics prize, the Fields Medal is also known as the "Nobel - DayDayNews

The Fields Medal is an international mathematics award proposed by Canadian mathematician Fields. It is one of the highest international awards in the field of mathematics. Because the Nobel Prize does not include a mathematics prize, the Fields Medal is also known as the "Nobel

A woman in war-torn Ukraine won the Nobel Prize in mathematics, the second female winner in history

05/30 1904

The device is mainly used to construct the three-dimensional stress environment of rock samples under formation conditions. It uses real fracturing materials and fracturing processes to conduct fracturing simulation experiments. Its technology is leading and can simulate in-situ - DayDayNews

The device is mainly used to construct the three-dimensional stress environment of rock samples under formation conditions. It uses real fracturing materials and fracturing processes to conduct fracturing simulation experiments. Its technology is leading and can simulate in-situ

[Industrial Development] A 10,000-ton ultra-large hydraulic fracturing simulation experimental device was “born” in our city

05/30 1032

Virology is primarily concerned with viruses that are pathogenic to humans or other species of which we are most concerned. During the novel coronavirus pneumonia epidemic, scientists have conducted a lot of research on SARS-CoV-2, the pathogen that causes infection. - DayDayNews

Virology is primarily concerned with viruses that are pathogenic to humans or other species of which we are most concerned. During the novel coronavirus pneumonia epidemic, scientists have conducted a lot of research on SARS-CoV-2, the pathogen that causes infection.

Research on new viruses and new hosts will vigorously promote the development of virology

05/30 1627

For our country’s scientific and technological innovation in the past seventy years, we should be most grateful to the United States. Although “crossing the river by touching the American emperor” is a joke, it also summarizes the general idea of our scientific and technologi - DayDayNews

For our country’s scientific and technological innovation in the past seventy years, we should be most grateful to the United States. Although “crossing the river by touching the American emperor” is a joke, it also summarizes the general idea of our scientific and technologi

When will there be another breakthrough in basic science? Where is our technological innovation going?

05/30 1506

Many people think that their current location is "family room", "toilet", "neighborhood convenience store", "park bench", etc., but this is only understandable information in ordinary people's lives. In fact, humans are on the earth, and the earth rotates on its axis and revolves - DayDayNews

Many people think that their current location is "family room", "toilet", "neighborhood convenience store", "park bench", etc., but this is only understandable information in ordinary people's lives. In fact, humans are on the earth, and the earth rotates on its axis and revolves

Where are you in the vast universe?

05/30 1472

Denise Kühnert and other researchers from the Max Planck Institute in Germany extracted hepatitis B virus sequences from 137 early human samples located in western Eurasia and the Americas from about 400 to 10,500 years ago and analyzed their evolution. - DayDayNews

Denise Kühnert and other researchers from the Max Planck Institute in Germany extracted hepatitis B virus sequences from 137 early human samples located in western Eurasia and the Americas from about 400 to 10,500 years ago and analyzed their evolution.

Science | The evolution of hepatitis B virus over the past ten thousand years

05/30 1650

Recently, CBS broke a piece of shocking news: a photo that may be an "alien shiti". It is said that this photo is related to the original "Roswell Alien Incident". - DayDayNews

Recently, CBS broke a piece of shocking news: a photo that may be an "alien shiti". It is said that this photo is related to the original "Roswell Alien Incident".

75 years later, the media found new evidence of the "Roswell UFO incident". Do aliens really exist?

05/30 1246

Did you know that the human brain is the most sophisticated and important organ in the world. It is composed of 200 billion brain cells, can store 100 billion pieces of information, generates thoughts that travel more than 300 miles per hour, has more than 100 megabytes of interl - DayDayNews

Did you know that the human brain is the most sophisticated and important organ in the world. It is composed of 200 billion brain cells, can store 100 billion pieces of information, generates thoughts that travel more than 300 miles per hour, has more than 100 megabytes of interl

Intellectual training 365 questions

05/30 1107

This animated image confirms the location of the newly formed rocket body's twin craters. The first half is a view taken by the Lunar Reconnaissance Orbiter on February 28, 2022 (M1400727806L); the second half is from May 21, 2022 (M1407760984R). The width shown in the picture is - DayDayNews

This animated image confirms the location of the newly formed rocket body's twin craters. The first half is a view taken by the Lunar Reconnaissance Orbiter on February 28, 2022 (M1400727806L); the second half is from May 21, 2022 (M1407760984R). The width shown in the picture is

A mysterious rocket of unknown origin created two craters on the moon.

05/30 1270

The oxygen content of the air is only about 40% of that in the plains, and the annual average temperature is below 0 degrees Celsius. Looking around, you can see the boundless plateau alpine desert grassland. This is the Qiangtang National Nature Reserve, known as the "forbidden - DayDayNews

The oxygen content of the air is only about 40% of that in the plains, and the annual average temperature is below 0 degrees Celsius. Looking around, you can see the boundless plateau alpine desert grassland. This is the Qiangtang National Nature Reserve, known as the "forbidden

Meteorological service records of "life forbidden zone"

06/01 1299

A new Tel Aviv University study proposes a new AIDS treatment that could be turned into a vaccine or a one-time treatment for HIV patients. The study looked at modifying type B white blood cells in patients so that they release anti-HIV antibodies in response to the virus. - DayDayNews

A new Tel Aviv University study proposes a new AIDS treatment that could be turned into a vaccine or a one-time treatment for HIV patients. The study looked at modifying type B white blood cells in patients so that they release anti-HIV antibodies in response to the virus.

Scientists propose potential AIDS treatment: HIV may be defeated with a single injection

06/01 1843

Shape memory polymers have broad application prospects in biomedical and mechanical engineering. However, most shape memory polymer programming processes require heating, such as water baths and oil baths. However, this environmental indirect heating method has limited heating ra - DayDayNews

Shape memory polymers have broad application prospects in biomedical and mechanical engineering. However, most shape memory polymer programming processes require heating, such as water baths and oil baths. However, this environmental indirect heating method has limited heating ra

Jilin University and Huazhong University of Science and Technology joint research-shape memory polymer co-extrusion 4D printing strategy

06/01 1109

Amorphous calcium carbonate (ACC) calcium supplement developed by Israeli biotech company Amorphical was tested in space and results show that it can improve muscle performance in zero gravity. , strengthen and build bones, provide body functions, and enhance immunity. - DayDayNews

Amorphous calcium carbonate (ACC) calcium supplement developed by Israeli biotech company Amorphical was tested in space and results show that it can improve muscle performance in zero gravity. , strengthen and build bones, provide body functions, and enhance immunity.

Technology Frontier | Israel’s innovative ACC technology opens a new era of “space settlement”

06/01 1646

In mid-to-late June, a professional monitoring found that Chinese horseshoe crabs were found all over the coastal tidal flats of the Hepu Dugong National Nature Reserve in Guangxi. The maximum density per unit quadrat was as high as 53.1 birds/100 square meters, ranking first in - DayDayNews

In mid-to-late June, a professional monitoring found that Chinese horseshoe crabs were found all over the coastal tidal flats of the Hepu Dugong National Nature Reserve in Guangxi. The maximum density per unit quadrat was as high as 53.1 birds/100 square meters, ranking first in

With a density of 53.1 horseshoe crabs per 100 square meters, the density of horseshoe crabs in Guangxi ranks first in the country.

06/01 1214

There are no identical creatures on the earth, and there are no identical individuals. Even identical twins will have such differences. However, scientists have concluded that there is only one ancestor of these various creatures living on the earth. Then the creatures on the ear - DayDayNews

There are no identical creatures on the earth, and there are no identical individuals. Even identical twins will have such differences. However, scientists have concluded that there is only one ancestor of these various creatures living on the earth. Then the creatures on the ear

How is the direction of biological evolution determined?

06/01 1334

This year's Taiwanese dramas are really surprising. "The Distance Between Us", a reality-themed drama, won Douban's highest score for Chinese-language dramas in 2019 with 9.5 points. The most popular comment with the most likes said: "The quality of Taiwanese dramas has already r - DayDayNews

This year's Taiwanese dramas are really surprising. "The Distance Between Us", a reality-themed drama, won Douban's highest score for Chinese-language dramas in 2019 with 9.5 points. The most popular comment with the most likes said: "The quality of Taiwanese dramas has already r

Douban 9.0 points, dual soul travel setting + high energy reversal + pure love in a girl’s heart

06/01 1948

Comment: When I was a kid, nostalgia was like a narrow ticket, with me on this end and the bride on the other; Comment: Although this method of treatment is very painful, compared with being skinned, this way of death may be more refreshing. . - DayDayNews

Comment: When I was a kid, nostalgia was like a narrow ticket, with me on this end and the bride on the other; Comment: Although this method of treatment is very painful, compared with being skinned, this way of death may be more refreshing. .

Jay Chou brings out Mojito/Johnson & Johnson removes whitening products from shelves/Batman director dies

06/01 1188

More than half a year has passed since the single "Say Good or Not Cry" was released on September 16, 2019. Whenever he encounters fans urging him to sing online, Jay always responds playfully: New songs are coming. - DayDayNews

More than half a year has passed since the single "Say Good or Not Cry" was released on September 16, 2019. Whenever he encounters fans urging him to sing online, Jay always responds playfully: New songs are coming.

Jay Chou's new song "Mojito" is released! The location where the MV was filmed was both poor and sexy. Song Hye Kyo, Jackie Chan and Pu Shu both came to check in.

06/01 1928

At 12 noon on July 6, Jay Chou's new song MV was officially launched. Throughout the morning, carnivals have started on major social platforms. Some people "get up early", while others are "extremely nervous". - DayDayNews

At 12 noon on July 6, Jay Chou's new song MV was officially launched. Throughout the morning, carnivals have started on major social platforms. Some people "get up early", while others are "extremely nervous".

Detonate hot search! Jay Chou releases an album again after 6 years, and the number of plays of the new song instantly exceeded one million! Netizen: True·Traffic Harvester

06/01 1479

I thought that after "Menghualu" ended, the audience would be in a drama shortage, but I didn't expect that ruthless dramas would come online one after another. CCTV's "All About Dr. Tang" is a medical theme that is closely related to the audience's lives. Although the emotional - DayDayNews

I thought that after "Menghualu" ended, the audience would be in a drama shortage, but I didn't expect that ruthless dramas would come online one after another. CCTV's "All About Dr. Tang" is a medical theme that is closely related to the audience's lives. Although the emotional

"Brilliant Star": What is the difference between good acting skills and poor acting skills? If there is no comparison, there will be no harm.

06/01 1447

Xiao S tried his best to prove that he and Xu Yajun were in love, but unfortunately no one believed him. Big S can make a lot of money by just spreading the details of marriage and love. No matter what age Big S is, there are men who are willing to hang around her, while Little S - DayDayNews

Xiao S tried his best to prove that he and Xu Yajun were in love, but unfortunately no one believed him. Big S can make a lot of money by just spreading the details of marriage and love. No matter what age Big S is, there are men who are willing to hang around her, while Little S

Little S really wants to spread the word. She has been busy for most of her life and doesn’t understand what love is.

06/01 1487