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目前显示的是 六月, 2023的博文

FDA Approves Abrysvo

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  May 31, 2023 -- Pfizer Inc. (NYSE: PFE) announced today that the U.S. Food and Drug Administration (FDA) has approved Abrysvo™ (Respiratory Syncytial Virus Vaccine), the company’s bivalent RSV prefusion F (RSVpreF) vaccine, for the prevention of lower respiratory tract disease caused by RSV in individuals 60 years and older. Abrysvo is unadjuvanted and composed of two preF proteins selected to optimize protection against RSV A and B strains and was observed to be safe and effective. “A vaccine to help prevent RSV had been an elusive public health goal for more than half a century. Today’s approval is a monumental step forward in delivering on Pfizer’s commitment to help alleviate the significant burden of RSV in higher-risk populations, which includes older adults,” said Annaliesa Anderson, Ph.D., Senior Vice President and Chief Scientific Officer, Vaccine Research and Development, Pfizer. “Abrysvo will address a need to help protect older adults against the potentially serious conse

Production process of square media bottle

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The   square media bottle   is a special container for holding the medium. It is generally made of transparent PETG material through injection stretch blowing process. The quality of the bottle is very important for the storage of the medium. So what is the production process of this container? In the production process of the square media bottle, the whole bottle blowing process can be divided into four stages: stretching, pre-blowing, blow molding and cooling. When the temperature adjustment process is completed, the mold is closed, and the stretch rod moves downward to stretch the preform downward along the axis. The lowering speed of the stretching rod is controlled by the stretching cam. The material distribution along the axis of the bottle is formed at this moment. The stretching speed is one of the key parameters affecting the distribution of the material along the axis. If it is too fast, there will be too much material at the bottom of the bottle, resulting in insufficient ma

Characteristics of cell culture roller bottles culture technology

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  Among the many cell culture methods, the   cell culture roller bottles   culture technology is favored by many pharmaceutical companies and research institutions because of its low cost and rapid cell culture in vitro. Cell culture spinner bottle is a high-quality consumable that can meet the large-scale production requirements of cells and tissues in both experiments and industrial production. It is widely used in the cultivation of animal and plant cells, bacteria, and viruses. The cell culture roller bottles culture technology has the following advantages:  1. Provide a larger growth surface area for cells; 2. Slight rotation can prevent some components formed in the culture medium from possibly affecting cell growth; 3. There is no need for any treatment such as digestion, just take out the cell spinner bottle on the roller bottle machine and place it under the cell observation table for observation; Cell Culture Roller Bottles 4. It is convenient to observe and monitor the growt

Introduction to the sterilization method of PETG media bottles

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PETG media bottles   are a plastic storage container with high transparency, which are generally used to store serum, culture medium, buffer solution and other solutions. In order to avoid microbial contamination caused by the packaging, it will be sterilized, and this packaging is mainly sterilized by cobalt 60. Sterilization is to ensure the removal or killing of all bacteria, viruses, fungi and other microorganisms on the PETG media bottles by various physical and chemical means, so as to achieve a sterility assurance level of 10-6, that is, to ensure the survival of microorganisms on an item The probability is only one in a million. Only in this way can microorganisms on the packaging be prevented from causing additional contamination of the contents. PETG Media Bottles Cobalt 60 sterilization is the use of 60Co γ-ray irradiation to act on microorganisms, directly or indirectly destroying the nucleus of microorganisms, thereby killing microorganisms and playing the role of disinfec

Application of PETG media bottle - cell cryopreservation solution

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  PETG media bottle   is a square storage container with very good low temperature resistance, suitable for various solutions that require low temperature storage, such as culture medium, serum, etc., in addition, it can also be used for the storage of cell cryopreservation solution. Cell cryopreservation is one of the main methods of cell preservation. Using cryopreservation technology to store cells in liquid nitrogen at -196°C can temporarily remove the cells from the growth state and preserve their cell characteristics for a long time, and then resuscitate the cells for experiments when needed. At the same time, properly freezing a certain amount of cells can prevent the cells from being unable to continue to be cultured due to cell contamination or other accidents, which plays a role in cell preservation. 60ml PETG Media Bottles When freezing cells, cell cryopreservation solution is a ready-to-use low-temperature solution for culturing cells to protect cells. This solution needs t

Raw material characteristics of cell factory

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  The   cell factory   is an important cell culture container, which is processed from polystyrene raw materials and plays an important role in the large-scale culture of cells. So, what are the characteristics of this raw material?  Polystyrene is one of the five general-purpose plastics, which is polymerized from styrene monomer. Its characteristics are as follows: 1. Light weight, less water absorption, colorless and transparent, brittle, glass-like, tasteless and non-toxic; 2. Because the benzene ring increases the steric barrier of macromolecules and restrains molecular movement, the surface hardness and rigidity are high, and the dimensional stability is good; but the brittleness and impact strength are small, and the wear resistance and scratch resistance are poor. 3. Excellent electrical insulation performance, especially high frequency insulation; Cell Factory 4. The product has low impact strength and poor wear resistance; 5. Good coloring, surface decoration and radiation re