The mean concentration and contents of polypeptide and nucleotide of the samples withacid treatment were 50%,32.9% and 43% lower than that of non-acid treatment.

• 用经酸处理的沉积物制备的转移因子的浓度、多肽和核苷酸含量均较未经酸处理者分别平均低50%25、32.；9%25和43