![Fulham's Clinton Dempsey, right, goes for the ball with Chelsea's Salomon Kalou, during their English Premier League soccer match at Fulham's Craven Cottage Stadium in London, Monday, Feb. 14, 2011. (AP Photo/Alastair Fulham's Clinton Dempsey, right, goes for the ball with Chelsea's Salomon Kalou, during their English Premier League soccer match at Fulham's Craven Cottage Stadium in London, Monday, Feb. 14, 2011. (AP Photo/Alastair](https://c8.alamy.com/comp/2NC9AXM/fulhams-clinton-dempsey-right-goes-for-the-ball-with-chelseas-salomon-kalou-during-their-english-premier-league-soccer-match-at-fulhams-craven-cottage-stadium-in-london-monday-feb-14-2011-ap-photoalastair-grant-no-internetmobile-usage-without-football-association-premier-leaguefapllicence-call-44-0-20-7864-9121-or-email-info@football-datacocom-mailtoinfo@football-datacocom-for-details-2NC9AXM.jpg)
Fulham's Clinton Dempsey, right, goes for the ball with Chelsea's Salomon Kalou, during their English Premier League soccer match at Fulham's Craven Cottage Stadium in London, Monday, Feb. 14, 2011. (AP Photo/Alastair
![Frontiers | Traumatic Stress-Induced Vulnerability to Addiction: Critical Role of the Dynorphin/Kappa Opioid Receptor System Frontiers | Traumatic Stress-Induced Vulnerability to Addiction: Critical Role of the Dynorphin/Kappa Opioid Receptor System](https://www.frontiersin.org/files/Articles/856672/fphar-13-856672-HTML/image_m/fphar-13-856672-g001.jpg)
Frontiers | Traumatic Stress-Induced Vulnerability to Addiction: Critical Role of the Dynorphin/Kappa Opioid Receptor System
![Psychoactives | Free Full-Text | The Role of the Dynorphin/Kappa Opioid Receptor System in the Actions of Alcohol Psychoactives | Free Full-Text | The Role of the Dynorphin/Kappa Opioid Receptor System in the Actions of Alcohol](https://www.mdpi.com/psychoactives/psychoactives-01-00006/article_deploy/html/images/psychoactives-01-00006-g001.png)