B-Form and Z-Form DNA (image) University of Luxembourg Caption The normal (B-form) DNA will switch to left-handed (Z-form) DNA when it is physically twisted, or when a lot of salt is added to the solution. Researchers at the University of Luxembourg were able to accurately calculate for the first time the amount of salt which is required to do this. Z-DNA in the cell leads to loss of function and cancer. Credit (c) Josh Berryman Usage Restrictions None 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.