The result of immunologic test showed that there was crossed protection between the two bacteria.Vanhnaseng(2004) cloned the gene of cIL-18 and obtained recombinant expression plasmid pcDNA3.1/cIL-18.

• 曹素芳（2004）克隆了禽巴氏杆菌外膜蛋白H基因（ompH），构建了该基因与cIL-18基因真核共表达质粒pcDNA3.；1/ompH-cIL-18，免疫试验结果表明，pcDNA3