After a series of purification processes of LPF and FHA,such as incubating, salting,soaking and differential centrifugation, the ELISA units of LPF and FHA were closely positively associated with the amount of protein.

• LPF和FHA在经培养、盐析、浸提、超速和分级离心后,其ELISA单位与蛋白量密切相关,呈同步消长。