LSP in tris / EDTA buffer pH 8.0 are better than in phosphate buffer pH 7.2; the former can be stored more than 10 months and the later less than 6 months.

• 以Tris/EDTA pH 8.；0为缓冲液保存LSP；其抗原性维持10个月以上不变；明显优于以磷酸盐缓冲液pH 7