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Curated Video
Excision Repair of DNA: Nucleotide Excision Repair and Base Excision Repair
DNA repair mechanisms like base excision repair (BER) and nucleotide excision repair (NER) fix damage by removing and replacing affected regions. BER removes a single damaged base using glycosylases (e.g., to fix deaminated cytosine),...
Curated Video
Ribosomes
The structures inside cells that synthesize proteins. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
Howard Hughes Medical Institute
Hhmi: Biointeractive: Viral Outbreak: The Polymerase Chain Reaction (Pcr)
Learn how a standard lab technique, polymerase chain reaction, amplifies a single or several copies of a piece of DNA. [0:55]