Methods: In 1999, an original population of Mongolian gerbil was introduced into the Laboratory Animal Research Center from Dalian Medical College.

• 方法:1999年从大连医学院引进长爪沙鼠原始种群,饲养过程中控制动物体内外的微生物和寄生虫、对动物进行驯化、对饲料进行筛选,严格控制动物的繁育。