实验用12只鼠龄约5个月,体重约400克的 Wistar雄性大鼠,在戊巴比妥钠麻醉下(40～50毫克/公斤),对每只大鼠于左后腿剪割2公分长,再用解剖刀切开暴露的肌肉组织,使切口的长与深为1×0.2公分。将含有4微居里~(144)Ce 的10微升无载体的~(144)CeCl_3酸性溶液(PH=2)滴入伤口后即缝合。动物分成四组,每组3只。第一组于污染后1小时一次腹腔注射 DTPA Twelve male Wistar rats, about 5 months old and weighing about 400 grams, were anesthetized with pentobarbital (40-50 mg / kg), and each rat was cut in the left hind leg 2 Cm length, and then scalpel exposed muscle tissue, the incision length and depth of 1 × 0.2 cm. Ten microliters of a ~ (144) CeCl 3 acidic solution (PH = 2) containing 4 microcurrents ~ (144) Ce were instilled into the wound and stitched. The animals were divided into four groups of three. The first group received intraperitoneal injection of DTPA one hour after contaminating