PCR technique (Polymerase Chain Reaction), Animation.
It is a technique used to make multiple copies of a DNA segment of interest, generating a large amount of copies from a small initial simple.
Amplification of DNA segments makes possible the detection of pathogenic virus or bacteria, identification of individuals (DNA fingerprinting), and several scientific research involving DNA manipulation.
Spanish version: http://youtu.be/TalHTjA5gKU

This video has been produced in the Institute of General Organic Chemistry of the CSIC (IQOG-CSIC), Spain, by Guillermo Corrales, as part of its task for promoting Science Communication and may be freely used for educational and science popularization purposes.
Canal Divulgación. Divulgación científica.
Instituto de Química Orgánica General (QOG) CSIC
Madrid, Spain
http://www.youtube.com/user/CanalDivulgacion