FIG. 2.

DNA sequences and positions of oligonucleotide primers derived from the E. chaffeensis p120 gene (open box) and the DNA sequences flanking the gene (shaded boxes). The positions of primers are indicated as minus and plus for DNA sequences upstream and downstream of the p120 gene, respectively. Nine pairs of primers were formed by combining each forward primer with each reverse primer and were used to amplify the E. canis p120 gene by PCR.