Modulation of cell morphology by RCC medium. Cells cultured from day 6 to day 12 in GM-CSF+TNF alone (a, c, and e) or in the presence of 10% RCC CM (b, d, and f). Cell morphology as evaluated by phase contrast microscopy (a and b) and MGG staining (c and d) and phagocytic capacity (e and f) evaluated by FITC-coupled 0.5 μmol/L latex beads ingestion for the last 4 hours of culture time (counterstained with MGG). Results are representative of 10 different experiments.