Expression of concern: The PHA-skin test reflects acquired T-cell mediated immunocompetence in birds.

PLoS One · 2012 · PMC3493530 · PMID 23145183

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highly significantno p-value reported

These analyses showed highly significant correlations between individual tissue swelling and circulating CD5 + and CD8 + lymphocyte subsets (Figure 3), thus supporting the conclusions of experiment #1 on the use of the PHA test as an indicator of acquired T-cell mediated immunocompetence in birds.

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