One of the most amazing inventions of the 19th century is cryopreservation which is the process of preserving living cells or tissues in an extremely low temperature usually -196 degree centigrade which is achieved by using liquid nitrogen. The principle of cryopreservation is that during the process water inside and outside the cells are converted to ice, and as a result the metabolic and physical processes stop but there is always risks of damage to the cells which can be overcome by using cryoprotectants, chemicals which effectively reduce the damage to the cells during ice formation and whenever the cells need to be revived, they are thawed by increasing temperatures. The process involves the cells or tissues to be mixed with cryoprotectants in a styrofoam tube or glass tube and introduced in a special deep freezer which cool down the tubes up to -80 degree centigrade at the cooling rate of 1 degree centigrade per minute and then subsequent transferring to liquid nitrogen. A variety of cells and tissues including semen, stem cells, oocytes, embryos from animals and pollen, seeds, cells in tissue culture from plants have been successfully preserved by this technique. Ethical and commercial applications of this technique include genetic diversity preservation, stem cell culture to cure cancer patients and sperm banking. Cryopreservation continues to explore new doors to the advanced research and scientists are now working to preserve the human body for indefinite period and one day the dream to conquest death may come true.
Mohammad Mamun Chowdhury,EUMAINE
One of the most amazing inventions of the 19th century is cryopreservation [add a comma here] which is the process of preserving living cells or tissues in an extremely low temperature usually -196 degree centigrade [add a comma here] which is achieved by using liquid nitrogen. The principle of cryopreservation is that during the process water inside and outside the cells are converted to ice, and as a result the metabolic and physical processes stop but there is always risks of damage to the cells which can be overcome by using cryoprotectants, chemicals which effectively reduce the damage to the cells during ice formation and whenever the cells need to be revived, they are thawed by increasing temperatures. [very long sentence, but thenks to the linking words it is still readale]The process involves the cells or tissues to be mixed with cryoprotectants in a styrofoam tube or glass tube and introduced in a special deep freezer which cool [cools / singular] down the tubes up to -80 degree centigrade at the cooling rate of 1 degree centigrade per minute and then subsequent transferring to liquid nitrogen. A variety of cells and tissues including semen, stem cells, oocytes, embryos from animals and pollen, seeds, cells in tissue culture from plants have been successfully preserved by this technique. Ethical and commercial applications of this technique include genetic diversity preservation, stem cell culture to cure cancer patients and sperm banking. Cryopreservation continues to explore new doors to the [drop 'the' here]advanced research and scientists are now working to preserve the human body for [add an article: an] indefinite period and one day the dream to conquest [to conquer] death may come true.
ReplyDeleteFlow is upheld despite some very long sentences. Style is ok, but mind your accuracy: spelling and the use of articles
olaf