Fig. 2From: High anti-Ascaris seroprevalence in fattening pigs in Sichuan, China, calls for improved management strategiesDot plots displaying optical density ratio (ODR) levels (mean ± standard error, SE) for anti-Ascaris antibodies. ODR levels were measured by ELISA in 512 individual serum samples from 13 pig farms (farms A–M; Table 1) in Sichuan Province, China. The horizontal line indicates the cut-off value of ODR = 0.50Back to article page