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.
Definition of Propaganda. Propaganda is a form of communication which carries a biased message and is intended to influence others to accept or reject certain views or agendas. Propaganda involves spreading ideas or informationâwhether true or falseâto the general populace such that popular opinion sways in a certain way.