It is suitable for the collection, transportation and storage of cell samples, which can maintain the stability of the original morphological structure of cells, and is only used for in vitro analysis and detection, not for therapeutic purposes, and is stored at room temperature for 8 weeks after sampling, and the low temperature preservation effect is better. It can fix cells, prevent cell aggregation, disperse mucus, remove red blood cells, maintain PH value and ionic strength, prevent cell deformation, and store at room temperature