Endorphin Positive Cells (IMAGE) Neural Regeneration Research Caption The number of β-endorphin positive cells was significantly increased after 28 days of electroacupuncture therapy (immunofluorescence 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.