CD4<sup>+</sup>TGFβ<sup>+</sup> cells infiltrated the bursa of Fabricius following IBDV infection, and correlated with a delayed viral clearance, but did not correlate with disease severity, or immunosuppression.

Front Immunol · 2023 · PMC10515216 · PMID 37744374

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did not reach statistical significanceno p-value reported

In older birds, there was a slight reduction in HI titre in F52/70 inoculated birds, but this did not reach statistical significance ( Figure 2H ).

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