Fig. 3.

Expression of CD83 on freshly cultured fibroblast-like cells from non-affected lung (a) or tumor (b). Cells, obtained after surgical resection of primary lung cancer, as described in the Figs. 1 and 2, were maintained in serum-free RPMI 1640 during 2 months and then recovered by trypsin-treatment, labeled and analyzed by flow cytometry for the expression of CD83. Results from one patient (# 8) are shown. Empty histogram isotype control and filled histogram cells labeled with anti-CD83 antibody