RNAse protection assay using multiple probes detecting genes in the Bcl-2 and Fas receptor-mediated death pathways. Twenty micrograms of RNA isolated from parental M1p53ts_val cells or M1p53ts_val cells (clone 25) expressing E2A-HLF cultured at 37°C (0 hour) or at 32°C (14 hours) were hybridized to the mouse probes. RNA levels for each gene were compared with levels of expression of the housekeeping genes Gapdh and L32.