Fig. 3

Differential protein expression in salivary glands between PMD and PMD-R strains. Differences in protein expression are represented as expression ratio or fold expression (PMD-R/PMD). Horizontal dot lines indicate the 2-fold difference in expression level in either direction (2 for a higher expression in the PMD-R strain and − 2 for a lower expression in the PMD-R strain). Proteins showing significantly different more than or less than 2-fold expression (Student’s t-test, P ≤ 0.05) are indicated by an asterisk (*). The ANV of each major protein and their fold expression values are shown in Additional file 3: Table S2