Fig 1. Number of SNPs associated with PTB infection status.
The total number of SNPs with moderate (A), or high (B) association with PTB infection status determined by ELISA (E), tissue PCR (P), and tissue culture (C) combinations. Animals were considered cases when they were positive to all the tests, and controls when they were negative to any (+/), or all of them (+/-). A moderate threshold for the association between a SNP and a phenotype was set at a significance level (α) between P = 5 × 10−5 and P = 5 × 10−7. The high threshold for evidence of an association was set at P < 5 × 10−7.