In fact, many flower friends asked before: Will the winter of the month be frozen? Do you want to move to the house, especially the flower friends in the north, because of the cold weather, you are more worried about the wintering of the rose. In fact, rose flowers are very cold-resistant, most of the rose can withstand -15 ° C low temperature, and some rose can withstand -20 ° C low temperature. Therefore, the flower friends in the southern and central regions do not have to worry about the problem of wintering of the rose flowers. It is enough to go outdoors in winter. In the north, as long as the winter temperature is not lower than -15 °C, the rose can be used for outdoor wintering, and the ground planting does not need to be cold-proof. If you are a potted plant, it is recommended to plant it in a pot with a flower pot or move it into a cold room without heating. If it is a relatively northerly region such as Heilongjiang, and the winter temperature is below -20 °C, then it is necessary to do cold-proof measures for the rose. The potted plants should be moved into a cold room with a temperature not lower than -10 °C. If it is planted in the ground, the branches should be sorted and bundled in winter, and then covered with straw, plastic film, etc. Windproof, strong winds will make the branches of the rose quickly lose water and wither. In fact, in most areas of China, planting roses do not need to worry about wintering, and autumn is also a good season for planting, which can make the rose have sufficient time for planting, and spring can explode. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Magnetic Bead Nucleic Acid Extraction Reagent
The magnetic bead method nucleic acid extraction kit is a high-tech product that combines biological science and nanomaterial science. It is a major breakthrough in my country's nucleic acid extraction and purification technology. .
Magnetic bead method for nucleic acid extraction has incomparable advantages over traditional DNA extraction methods, which are mainly reflected in: 1. It can realize automatic and large-scale operation. At present, there are 96-well nucleic acid automatic extraction instruments, and the extraction time of one sample can be realized. The processing of 96 samples complies with the high-throughput operation requirements of biology, enabling rapid and timely response to infectious disease outbreaks, which makes traditional methods unmatched; â‘¡ The operation is simple and time-consuming, and the entire extraction process has only four steps , most of them can be completed within 36-40 minutes; â‘¢ Safe and non-toxic, no toxic reagents such as benzene and chloroform in traditional methods are used, and the damage to experimental operators is minimized, which fully conforms to modern environmental protection concepts; â‘£ Magnetic beads and nucleic acids The specific binding of the extracted nucleic acid results in high purity and high concentration of the extracted nucleic acid.
According to the same principle as the silica membrane spin column, the superparamagnetic silica nano-magnetic beads are prepared after the surface of the superparamagnetic nanoparticles is modified and modified by nanotechnology. The magnetic beads can specifically recognize and efficiently bind to nucleic acid molecules on a microscopic interface. Using the superparamagnetic properties of silica-coated nanomagnetic microspheres, under the action of Chaotropic salts (guanidine hydrochloride, guanidine isothiocyanate, etc.) and an external magnetic field, samples from blood, animal tissues, food, pathogenic microorganisms, etc. The isolated DNA and RNA can be used in clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbial testing, food safety testing, molecular biology research and other fields.
Magnetic bead nucleic acid extraction can generally be divided into four steps: lysis-binding-washing-elution.
Genetic testing will surely become a new symbol of the development of the biological industry. The emergence of high-throughput, automated nucleic acid extraction methods will reduce the labor cost of genetic testing, make large-scale testing a reality, and make it possible for genetic testing to reach ordinary people.
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