Comparison of CARS with SHG (IMAGE) Moscow Institute of Physics and Technology Caption The advantage of the CARS method over SHG (the main component of SONICC): lysozyme crystals approximately 1 micron in length are visible when using CARS (right), however they are not visible when using SHG (left). Credit Image courtesy of the authors of the paper. Usage Restrictions With proper attribution 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.