wat are he-la cells and wats their application in cell culture techniques?????

Answer 1

A HeLa cell (also Hela or hela cell) is an immortal cell line used in medical research. The cell line was derived from cervical cancer cells taken from Henrietta Lacks, who died from her cancer in 1951

This cell line was propagated for use in cancer research. The cells proliferate abnormally rapidly, even compared to other cancers. They have active telomerase during cell division, preventing the incremental shortening of telomeres that is implicated in aging and eventual cell death. In this way, HeLa cells circumvent the Hayflick Limit.

In 2006, an estimated 10,000 women in the United States will be diagnosed with this type of cancer and nearly 4,000 will die from it. There are 7 most common types of HPV: 16, 18, 31, 33, 42, 52 and 58. Types 16 and 18 are the most common cause of the cancer.
As far as applictaion to cell cultures..
Mass culture of animal cell lines is fundamental to the manufacture of viral vaccines and many products of biotechnology. Biologicals produced by recombinant DNA (rDNA) technology in animal cell cultures include enzymes, hormones, immunobiologicals (monoclonal antibodies, interleukins, lymphokines), and anticancer agents. Although many simpler proteins can be produced using rDNA in bacterial cultures, more complex proteins that are glycosylated (carbohydrate-modified), currently must be made in animal cells. An important example of such a complex protein is the hormone erythropoietin. The cost of growing mammalian cell cultures is high, so research is underway to produce such complex proteins in insect cells or in higher plants.

Vaccines for polio, measles, mumps, rubella, and chickenpox are currently made in cell cultures. Due to the H5N1 pandemic threat, research into using cell culture for flu vaccines is being funded by the United States government. Novel ideas in the field include recombinant DNA-based vaccines, such as one made using human adenovirus (a common cold virus) as a vector or the use of adjuvants.

Answer 2

Yes and No. I understand what you are saying. But, I think it depends on the people too. I work in a school and we are always chatting in the teacher's room. No cell phones. But, people are more private in my school. If they are on their phones, it's usually in a private area, because it's a private conversation. However, everyone at my school is relatively friendly. We enjoy chatting with each other. I'm worked retail jobs and it's different. Most people are there because they are in college or trying to supplement their income. It's not a career and people tend to just go to work and leave. In retail, you don't have that co-worker relationship. You aren't considered a community of workers, like in a school or an office. In retail, everyone is there for one reason. To make money. In an office or school, you work together more and your more of a community. You have a common goal in an office or a school. In a department store, you don't work together all that much. I think people are different now too. People aren't as open to talking to people they don't know. I don't think it has to do with cell phones. People will always talk, but only if they want to. The reason these people aren't speaking/socializing is because they don't want to. Not because of cell phones. Would you feel the same way, if everyone was reading a book or the newspaper in the break room? Probably not. Even without cell phones, people can ignore social interaction. They can read a book, pretend to be sleeping or pretend to be writing a letter or something.

Answer 3

HeLa cells are an immortal cell line used in biomedical research. The cell line was derived from cervical cancer cells taken from Henrietta Lacks, who died in 1951 from this cancer. They have a modal chromosome number of 82, and do contain human papilloma virus-18 DNA. HeLa cells have been used in cancer research. Becasue they divide so readily in culture, and are immortal (do not die off after a certain number of cell divisions) HeLa contamination of other cell cultures has been a problem in some laboratories.

http://en.wikipedia.org/wiki/HeLa_cell

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Answer 4

They Have Numerous Applications, they are a Cell Line From a Cervical Cancer From Long Ago HeLa Stands for person's Name (I Have Forgotten her Name), If I Remember Correctly, they Have HPV-18 DNA in their Genome.

Answer 5

he-la cells are the immortal cancer cells from the cervix of a person called Henrietta lacks .