Retraction

In the article that we published, “The Progesterone Receptor in Human Term Amniochorion and Placenta Is Isoform C” by Anthony H. Taylor, Penny C. McParland, David J. Taylor, and Stephen C. Bell (Endocrinology 147:687–693, 2006), we recently discovered that a computer transposition error occurred prior to our submission of the manuscript for review. A scan of a Western gel from a paper by K. J. Saner et al. (Mol Cell Endocrinol 200:155–163, 2003), which was stored on our computer, was accidentally substituted for our own Western gel. Consequently, we are retracting the manuscript. We apologize for the inconvenience we have caused to our colleagues and readers of the journal.