Journal: Veterinary research

Article Title: Revealing novel and conservative CD8 + T-cell epitopes with MHC B2 restriction on ALV-J.

doi: 10.1186/s13567-024-01426-3

Figure Lengend Snippet: Figure 1 Detection of ALV-J shedding, ALV-J viremia, ALV-J antibody and T lymphocyte percentage of B2 haplotype chickens after ALV-J infection. Six chickens were randomly selected for sampling every 7 days post-infection (dpi). A ALV-J shedding was monitored via detecting the p27 expression levels in cloacal swabs. S/P value below 0.2 indicated negative ALV-J shedding. B ALV-J viremia was monitored via virus isolation. An S/P value above 0.2 indicated positive ALV-J viremia. C The ALV-J antibody level in the serum was monitored using the commercial ALV-J antibody test kit. An S/P value above 0.6 was considered ALV-J antibody positive. Five days before infection (dbi) and each week after infection, PBMCs derived from five chickens of infected and control groups were isolated to detect the T lymphocyte percentage, including the percentage of the CD4+CD3+T cell (D), the CD8α+CD3+T cell (E), and the CD3+CD4+CD8α+T cell (F). Each sample collected 1 × 105 cells for flow cytometric analysis. The one-way test was used for statistical comparison among A, B and C. And the unpaired Student t test was used for statistical comparison among D, E and F. * P < 0.05, ** P < 0.01.

Article Snippet: APC-conjugated mouse anti-chicken CD3+, PE-conjugated mouse anti-chicken CD8α+, FITC-conjugated mouse anti-chicken CD4+, (SouthernBiotech, Birmingham, USA) were used in this study.

Techniques: Infection, Sampling, Expressing, Virus, Isolation, Derivative Assay, Control, Comparison