Primers for PCR were designed based on nucleotide sequences of glycoprotein B genes of EHV 1 and EHV 4 to amplify specific regions for EHV 1 or EHV 4 or a common region of both viruses.

• PCR引物是根据编码EHV 1和EHV 4的糖蛋白B(gB)基因上的共有的核苷酸序列或型特有的核苷酸序列设计的。