白藜芦醇对小鼠实验性胃黏膜损伤的保护作用 7. Study of Cytoprotection of Gastric Mucosal and Intervention by Platelet Activating Factor Receptor Antagonist during Endotoxemia in Baby Rats; 内毒素血症幼年大鼠胃黏膜细胞保护作用及PAF受体拮抗剂干预的