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Immunohistochemical (IHC) staining at 4 weeks post-surgery in vivo: (a–c) representative images of CCR7, Arg1, and CD68 staining, (d–f) Quantitative analysis of CCR7, Arg1, and CD68-positive cells at 4 weeks after the operation (*p < 0.05. **p < 0.01. ***p < 0.001, ns indicates no significant difference).
