
Messenger RNA - Wikipedia
mRNA is created during the process of transcription, where an enzyme (RNA polymerase) converts the gene into primary transcript mRNA (also known as pre-mRNA). This pre-mRNA usually still contains …
Messenger RNA (mRNA) | Description & Function | Britannica
Dec 21, 2025 · Messenger RNA (mRNA) is a molecule in cells that carries codes from the DNA in the nucleus to the sites of protein synthesis in the cytoplasm (the ribosomes). Each mRNA molecule …
mRNA Vaccines: What They Are & How They Work - Cleveland Clinic
Oct 25, 2024 · MRNA — or messenger ribonucleic acid — is a molecule in your cells that copies instructions from your DNA and brings them to your ribosomes (protein-making structures in your …
Messenger RNA (mRNA) - National Human Genome Research Institute
2 days ago · Messenger RNA (abbreviated mRNA) is a type of single-stranded RNA involved in protein synthesis. mRNA is made from a DNA template during the process of transcription.
How mRNA vaccines work, and why controversial - USA TODAY
Aug 6, 2025 · Instead of growing a virus and weakening it to allow the body to engage its natural defenses, mRNA vaccines use pieces of genetic code to manufacture a protein, a piece of the virus.
What are mRNA vaccines, and how do they work? - Live Science
Apr 11, 2025 · mRNA vaccines teach the immune system to target specific proteins, often proteins found on a pathogen, like a virus. To do this, they use instructions carried in a genetic molecule called...
What is mRNA and How Does it Actually Work? - Biology Insights
Aug 2, 2025 · Messenger RNA (mRNA) is a fundamental molecule in biological systems. It functions as a single-stranded nucleic acid, similar to DNA but containing uracil instead of thymine. mRNA acts as …
mRNA Explained - Moderna
Jul 18, 2024 · Messenger RNA, or mRNA, exists in all cells in our bodies and has for millions of years. Just as its name suggests, it acts as a messenger to the cell's machinery that makes proteins, giving …
What are mRNA vaccines and how do they work? - MedlinePlus
Most vaccines contain a weakened or dead bacteria or virus. However, scientists have developed a new type of vaccine that uses a molecule called messenger RNA (mRNA) rather than part of an actual …
What To Know About MRNA Vaccines - Immunology Explained
Nov 10, 2025 · The type used in current vaccines is called linear mRNA, which delivers its message for a short time before breaking down naturally. A newer version, called self-amplifying mRNA (SAM), …