采用多种方法对两株经辛酸－硫酸按沉淀法纯化的抗ＨＦＥＳ病毒ＭｃＡｂ进行了免疫学鉴定．结果表明，纯化后的ＭｃＡｂ的免疫学活性（抗体效价）无明显改变，特别是仍保留了很高的中和活性、血凝抑制活性及对感染乳鼠的保护活性．纯化ＭｃＡｂ制剂置４℃保存，至少一年内抗体效价未见降低 Two strains of anti-HFES virus McAbs purified by caprylic acid-sulfuric acid precipitation were immunologically identified by a variety of methods. The results showed that there was no significant change in the immunological activity (antibody titer) of the purified McAbs, especially the high neutralizing activity, the hemagglutination inhibiting activity and the protective activity against the infected neonatal rat were still retained. The purified McAb was stored at 4 ° C for at least one year without any decrease in antibody titer