Using Tattoo Ink to Find Cancer (image) University of Southern California Share Print E-Mail Caption A tattoo ink color palette. Each color carries a unique spectral fingerprint that we can use as an imaging barcode to better identify and detect tumors. Tattoo and design created by Adam Sky. Credit Tattoo and Design by Adam Sky, image courtesy of the Zavaleta Lab at USC Usage Restrictions Please provide credit. 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.