Two inactivated vaccine with different antigen concentration were prepared by using the supernatant materials obtained from centrifuging the ground emulsion of SPF whole embryos infected with AEV Van Rockel strain.

• 将感染了AEV－VanRockel株的SPF全胚磨制的乳剂离心分离，取上清液制成抗原含量不同的两种灭活疫苗。