Fig. 6

Evaluation of CD133 expression in MB3W1 cells directly after cell isolation and during cell culture. Cytospins from different cell preparations were evaluated for CD133. Preferred expression of CD133 on cells directly derived from the pleural effusions (lower left) and on cultivated MB3W1 cells at day 4 after isolation (lower right). In comparison cytospins from the CSF at diagnosis showed little (if any) staining for CD133 (upper right). (Upper left: staining control)