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Representative photographs of histological features in vehicle group (A, C, E, and G) and group treated with Psora-4 (B, D, F, and H) on day 7. A and B: periodic acid-methenamine-silver staining was used to identify crescent formation. C and D: staining for macrophages with ED-1 antibody. E and F: staining for T cells with anti-CD antibody. G and H: staining for naïve T cells and central memory T cells with anti-CCR7 antibody. Original magnification: ×200.
