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. 2019 Oct 2;10:2299. doi: 10.3389/fimmu.2019.02299

Figure 4.

Figure 4

Changes of serum antibodies in different groups. The serum samples with a S/P value higher than 0.6 were considered ALV-J antibody positive. S/P: sample-to-positive = [(mean of OD450nm of sample–mean of OD450nm of negative control)]/[(mean of OD450nm of positive control–mean of OD450nm of negative control)].