Figure 7
From: Selective segregation of DNA strands persists in long label retaining mammary cells during pregnancy
Nuclear steroid receptor expressing cells in cycle. The nuclear label [3H]-thymidine is detected by autoradiography in sections from all experimental groups that were also stained for the nuclear steroid receptors (a) ER-α or (b) PR. All experimental groups contained epithelial cells that were ER-α/[3H]-thymidine or PR/[3H]-thymidine double positive. A cell double positive for the nuclear steroid receptor and [3H]-thymidine within the tissue section are displayed in the inset. ER, estrogen receptor; PR, progesterone receptor.