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By means of PCR,the gene encoding gD of bovine herpesvirus-1 (BHV-1) strain Luojing was amplified,cloned and sequenced.The nucleotide sequence of this gD gene was 1 251 bp,encoding 417 amino acids.Comparied with the published P8-2 strain,the homology of the necleotide sequence is 99.92%,and that of the deduced amino acid sequence is 100%.The results indicated that gD of BHV-1 was highly conservative.