Mechanism of Action: MAGE-A3 (IMAGE) GlaxoSmithKline Biologicals Caption Mechanism of action graphic for GlaxoSmithKline Biologicals' investigational MAGE-A3 Antigen-Specific Cancer Immunotherapeutic. Credit GlaxoSmithKline Biologicals Usage Restrictions Must include credit to GSK Biologicals 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.