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. 2020 Jan 10;51:3. doi: 10.1186/s13567-019-0730-3

Figure 1.

Figure 1

Serological results of samples from randomly selected sows. A Sera and B colostrum from five sows were analyzed by Western blot against a hot saline antigenic extract of Salmonella ΔXIII strain and by an LPS based IDEXX test. An S/P ratio of ≥ 0.25 is considered positive.