Figure 3

Correlation analysis of isolation from lung tissue and central organ tissues. X-axis: Score quantifying the degree of isolation from seven lung tissue localizations with 0 = no isolation, > 0–≤ 1 = low-grade isolation, > 1–≤ 2 = moderate isolation, > 2 = high-grade isolation. Degree of isolation from different central organ tissue is displayed on the y-axis as isolation score with 0 = no isolation, 1 = low-grade isolation, 2 = moderate isolation, 3 = high-grade isolation; diagonal lines: balance lines for degree of correlation; r: concordance value, p: significance value; concordance and significance calculated by Spearman Rank analysis; *results were obtained by direct plating of blood samples on A. pleuropneumoniae-selective blood agar [21] using the quadrant streaking method.