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In the realm of molecular biology and cell culture, maintaining a sterile environment is crucial for the successful growth and manipulation of cells. One of the most widely used antibiotic mixtures for preventing bacterial contamination in mammalian cell cultures is penicillin-streptomycin, often referred to as Pen-Strep. This combination not only protects cell cultures from bacterial infections but also plays a pivotal role in ensuring the overall health and viability of the cells throughout the experimental process.


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classification of liquid dosage form

Quaternary ammonium compounds (quats) are also widely used in veterinary practices. These disinfectants are effective against gram-positive bacteria and have some activity against viruses. Quats are often found in surface disinfectants that are used to clean cages, kennels, and other areas where animals are housed. However, they are less effective against gram-negative bacteria and certain viruses, which means they may not be suitable for all disinfection needs. It is crucial to follow the manufacturer's instructions for dilution and contact time to achieve the desired disinfection level.


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classification of liquid dosage form