Cancer Mass Spectrometer (IMAGE) Wiley Caption A novel mass spectrometric ionization technique based on rapid evaporation of biological tissues (see picture) can be used to analyze vital tissues during surgical intervention as well as for processed tissue specimens. A tissue identification system based on principal-component analysis was developed. The method differentiates malignant tumor cells from the surrounding healthy tissue. Credit (C) Wiley-VCH 2009 Usage Restrictions Permission to use with appropriate credit and link to http://dx.doi.org/10.1002/anie.200902546. 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.