Lambda's Insertion Machine (IMAGE) Brown University Caption Lambda uses this DNA-protein complex to insert its DNA into that of its E.coli host. Another complex, or machine, extracts the DNA later. Credit Arthur Landy et al./Brown University Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.