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Figure S3. Fraction of memory and activated T cells recruited in LN slices in the absence of CCR7 or its ligands. T cells purified either from LN (A) or from spleen (B) were labeled with CMFDA and overlaid onto WT or plt slices. After mechanical dissociation, recovered cells were stained with an anti-CD44 antibody. CD44 expression was measured by flow cytometry in CMFDA-positive cells.