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.
tr.v. inÂ·ured, inÂ·urÂ·ing, inÂ·ures also enÂ·ured or enÂ·urÂ·ing or enÂ·ures. To habituate to something undesirable, especially by prolonged subjection; accustom: Though the food became no more palatable, he soon became sufficiently inured to it (John Barth).