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. 2013 Jul 15;4(6):473–482. doi: 10.4161/viru.25730

Table 6. Distributions of the VFs from the VFDB in single-domain vs. in multi-domain proteins.

  Proteins with one annotated domain Proteins with two or more annotated domains SUM
Pathogen-specific VFs 318 104 422
Common VFs 760 540 1300
SUM 1078 644 1722

Pearson Chi-square test with Yates continuity correction. χ-squared = 38.1187, df = 1, P value = 6.657e−10.