Keywords nolatrexed dihydrochloride;long circulating liposome;ammonium sulfate gradients method;ultraviolet spectrophotometry;MTT;antitumor activity;

• 盐酸洛拉曲克;长循环脂质体;硫酸铰梯度法;紫外分光光度法;MTT;体内抑瘤试验;