An Adapter Molecule; tRNA. DnaTube.com - Scientific Video and Animation Site. Detailed explanation of mRNA Translation. Transcription & Translation: Transcription (Advanced) Transcription & Translation: Transcription (Advanced) Transcription is the process by which the information in DNA is copied into messenger RNA (mRNA) for protein production.
Transcription begins with a bundle of factors assembling at the promoter sequence on the DNA (in red). Here, two transcription factors are already bound to the promoter. Other proteins arrive, carrying the enzyme RNA polymerase (in blue). Under the Microscope #6 -- Killer T-cells. In this video we see a killer T-cell of the immune system attacking a cancer cell.
Under the Microscope is a collection of videos that show glimpses of the natural and man-made world in stunning close-up. They are released every Monday and Thursday for the next few weeks and you can see them here: Professor Gillian Griffiths said: “Cells of the immune system protect the body against pathogens. If cells in our bodies are infected by viruses, or become cancerous, then killer cells of the immune system identify and destroy the affected cells. Cytotoxic T-cells are very precise and efficient killers.
Conversations with History: Ocean Voyages with Sylvia Earle. Une Vie Extraterrestre. - une vidéo High-tech et Science. ScienceTube: Science Videos, Lectures and Science News. SciVee | Making Science Visible. Science. Monday’s SpaceX Launch Cancelled; Next Opportunity is April 18 SpaceX is launching a rocket to the International Space Station this afternoon.
The live webcast begins at 12:45 PST and the launch itself is scheduled for 1:58. Continue Reading. Universcience VOD - La plate-forme vidéo des sciences et des tec.