Most Americans say, He will live! After all, the thumbs-up sign is a positive thing. It's how we encourage our friends and silently show approval. But to the ancient Romans, a thumbs up mimicked the upward thrust of a sword through the heart. It meant, kill. A thumbs-down meant put your sword down. So where did this confusion about thumbs come from?
Freebase(0.00 / 0 votes)Rate this definition: Transfection. Transfection is the process of deliberately introducing nucleic acids into cells. The term is used notably for non-viral methods in eukaryotic cells.
Caitlin Smith. Transfection, the process of introducing foreign genetic material into a eukaryotic cell, is an important tool for many cell and molecular biologists, as well as anyone studying the effects of altered gene expression on cellular physiology.aitlin Smith. Transfection, the process of introducing foreign genetic material into a eukaryotic cell, is an important tool for many cell and molecular biologists, as well as anyone studying the effects of altered gene expression on cellular physiology.