Fig. 2.

Chemokine receptor gene array and surface expression on resting CD4⁺ T cells and following culture with multiple chemokines. (A) Heatmap of log signal intensity of chemokine receptor gene expression in resting CD4⁺ T cells cultured for 6 or 18 h with or without the chemokine CCL19. (B) Surface expression of chemokine receptors on CD4⁺ T cells following incubation with chemokines. Each chemokine is indicated on the y axis and the expression of the chemokine receptor in each histogram on the x axis. Expression was determined by flow cytometry in resting CD4⁺ T cells after 3 d of culture in media alone (control) or with chemokines as indicated for each row. Isotype controls are shown as gray histograms.