⑶ In acute toxicity test, lead acetate liquor, normal sodium and leaching liquor with three different concentrations were accordingly injected via the tail vein into experimental group and control group. ⑶在急性全身毒性试验中,经小鼠尾静脉将醋酸铅溶液、生理盐水、三种不同浓度的浸提液注入到相应实验组和对照组。