Low cost, big returns Because the new baculovirus-silkworm-derived vaccine uses only the E2 segment of the swine-fever virus, it produces only the E2 protein. It is therefore easily distinguished from an infection with the wild virus, which produces five proteins and five corresponding antibodies.
小成本、大回收至於利用桿狀病毒感染家蠶生產的豬瘟新疫苗，因為只用了病毒的一段基因── E2，只產生 E2 基因蛋白，因此可與受到野外活病毒感染的病豬（會產生 5 種蛋白與抗體）明顯區分。