Expression of TRA1-specific mRNA in Mm subline cells and of NOR1-specific mRNA in normal mouse tissues. The expression of TRA1- and NOR1-specific mRNAs was detected with the TRA1- and NOR1-specific probes MMPAS and N701AS, respectively. (A) The expression of TRA1 and NOR1 mRNA in Mm subline cells. The same blot used in Fig 2 was sequentially hybridized with TRA1-specific probe (MMPAS) and NOR1-specific probe (N701AS). (B) The expression of TRA1 and NOR1 mRNA in normal mouse tissues. The same blot used in Fig 5 was sequentially hybridized with TRA1- and NOR1-specific probes.