Figure 5

Expression of the Rb protein in four tumor cell lines. Rb expression is not lost in weakly inducible LS1034 colon carcinoma (D) and MSTO-211H mesothelioma (F). Rb expression is also preserved in the non-inducible HepG2 hepatocellular carcinoma (G). Panels A-C show the experimental setup for measuring Rb-specific cellular fluorescence by flow cytometry.