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Transfection is a key laboratory technique used to introduce foreign nucleic acids such as DNA, RNA, or oligonucleotides into eukaryotic cells. It is widely applied in gene expression studies, RNA interference, genome editing (CRISPR), functional assays, and protein production.

Modern transfection systems combine advanced chemistry and delivery technologies to ensure high efficiency, low cytotoxicity, and reproducible results across a variety of cell types, including hard-to-transfect cells. These solutions are available in different formats such as lipid-based reagents, electroporation systems, and polymer-based carriers, giving researchers flexibility based on their experimental needs.

Applications of transfection extend to cancer research, immunology, drug development, regenerative medicine, and vaccine research, making it a cornerstone of molecular biology and biotechnology.

By ensuring precise delivery of genetic material while maintaining cell viability, transfection reagents and systems accelerate scientific discovery and support advanced biomedical research.