Nucleic acid extraction and purification is a crucial step in molecular biology experiments. When performing nucleic acid extraction and purification, the sample to be extracted first needs to be cell lysed to release the nucleic acid in the cells. The proteins are then precipitated and removed by adding appropriate buffers and enzymes, thereby preserving the nucleic acids. The nucleic acid is then specifically adsorbed and purified using silica gel columns, magnetic beads, or other adsorption materials. Finally, impurities are removed through washing steps, and high-quality, pure nucleic acid samples are finally obtained.

Keywords for nucleic acid extraction and purification include DNA, RNA, lysis, buffer, enzyme, precipitation, silica gel column, magnetic beads, adsorption, and washing. During the experiment, scientists need to strictly control every step to ensure that the extracted nucleic acid samples have sufficient purity and integrity to ensure the accuracy and reliability of subsequent experiments.

By rationally selecting extraction methods and purification kits, combined with rigorous operating procedures, the efficiency and stability of nucleic acid extraction and purification can be improved. In addition, cleaning the workbench and experimental vessels in a timely manner to avoid the introduction of exogenous nucleic acid contamination is also one of the important factors to ensure the success of the experiment.

Nucleic acid extraction and purification is an indispensable step in molecular biology research. Only by strictly following operating procedures can high-quality nucleic acid samples be obtained, laying a solid foundation for the smooth development of scientific research.