RPA of mNC expression in mouse tissues and cell lines. RNA from a variety of tissues was subjected to RPA. Lane 1, brain; lane 2, embryo; lane 3, kidney; lane 4, pancreas; lane 5, spleen; lane 6, liver; lane 7, muscle; lane 8, mouse erythroleukemia cells; lane 9, uninduced MPRO cells; lane 10, MPRO cells induced with ATRA for 72 hours; lane 11, uninduced 32D C13 cells; lane 12, 32D C13 induced for 10 days with G-CSF; lane 13, yeast RNA digested with RNase; lane 14, yeast RNA alone.