GM Purple Tomatoes (IMAGE) John Innes Centre Caption Norfolk Plant Sciences (NPS) has developed genetically modified (GM) purple tomatoes containing high levels of antioxidants and anthocyanins Credit Andrew Davies - John Innes Centre Usage Restrictions No restrictions. License Public Domain 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.