DESI Image (image) Purdue University Caption Image A shows DESI mass spectrometry imaging from a surgical sample of a meningioma tumor and an optical image of a stained serial section. The distribution of meningioma cells observed by microscopy correlates with that identified through the DESI analysis. Image B shows the mass spectrum of meningioma region of the tissue section and illustrates the characteristic meningioma lipid profile. Credit (PNAS image, pnas.1215687110, Jan. 8 early edition/courtesy of Cooks' laboratory) 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.