IHC analysis of paraffin-embedded tumor sections from patients with PDA or control pancreatic tissue.

<p>Magnification: 200×. Comparisons of FoxP3⁺ cell, CD8⁺ cell and CD4⁺ cell infiltrates between the juxtatumoral stroma and the panstroma. IHC analyzed the expression of Foxp3, CD4 and CD8 and statistical analysis the frequencies in juxtatumoral stroma and in panstroma. Comparisons between the two groups were assessed using Student's t test. NS, not significant; ** <i>P</i><0.01, *** <i>P</i><0.001.