Proton NMR Spectrum (image) Aarhus University Share Print E-Mail Caption A proton NMR spectrum. Signals are due to different metabolites, with their peak integrals equal to their amount. Along the y-axis the T1 recovery time constant for each peak in the absence (red) and presence (blue) of adjuvant. This means that the lower T1, the faster the recording. (Graphics by Frans Mulder, Aarhus University.) Credit Frans Mulder, Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University. Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. Credit required: Frans Mulder, Interdisciplinary Nanoscience Center and Department of Chemistry, Aarhus University. Share Print E-Mail 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.