Ghrelin Expression (IMAGE) Neural Regeneration Research Caption After 14 days of Wen Dan Tang administration, ghrelin expression was increased in the prefrontal cortex and hypothalamus (immunohistochemistry staining). Credit <i>Neural Regeneration Research</i> Usage Restrictions None 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.