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1982年冬在津白3(TA3)纯系小鼠的群体中发现一只雄性侏儒小鼠,经繁殖与统计,8周龄时两性侏儒小鼠的体重均接近正常TA 3小鼠的二分之一。
In the winter of 1982, a male dwarf mouse was found in a population of pure TA3 (TA3) mice. The body weight of the dwarfed dwarf mice at 8 weeks of age was close to that of normal TA 3 mice one.