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Kinetics of CCL21 production during Irritant Contact Dermatitis Expression of CCL21 studied by immunohistochemical assay in skin biopsies taken before (0 hours) and after contact with 10 % aqueous sodium lauryl sulphate at 10, 48, 96 and 168 hours. Insets shows the marked areas amplified in order to reveal the CCL21+ lymphatic vessels. 400 × (original magnifications).
