Figure 4From: The construction and characterization of the bi-directional promoter between pp38 gene and 1.8-kb mRNA transcripts of Marek's disease virusesThe schematic presentation of the bi-directional promoter and the parts and directions of the promoter in different constructs. ----, indicates the deleted region. The numbers are the sites relative to ORF of pp38 gene as described by Cui et al [4].Back to article page