Modulatory Role of Ginsenosides Injected Intrathecally or Intracerebroventricularly in the Production of Antinociception Induced by Kappa-Opioid Receptor Agonist Administered Intracerebroventricularly in the Mouse - Suh, Hong W; Song, Dong K; Huh, Sung O; Kim, Yung H (Planta Medica, 2000)