FIGURE 6

Examples of relative differences in the expression of jun B in mouse, rat and human tissues. The RNA filter was first hybridized with jun B (Panel A), then stripped and rehybridized with actin (Panel B). The RNA samples were as follows: Lane 1, human breast tumor; lane 2, mammary tumor from a RIII/Sa mouse; lane 3, mammary tumor from a C57BLfGR mouse; lane 4, mammary gland from WLCO mouse; lane 5, mammary tumor from a BALB/cfC3H mouse; lane 6, lactating mammary gland from a BALB/cfC3H mouse; lane 7, non-lactating mammary gland from a BALB/cfC3H mouse; lane 8, rat tumor. The densitometric tracings A, B, C, and D correspond to lanes 6, 7, 14, and 15 respectively.