Comparison of the role of Klf9 and Klf11 in an animal endometriosis model.

<p>(<b>A</b>) Endometriotic Lesions (circled) in <i>Klf9-/-</i> animals were either unchanged or had regressed in size from the time of initial peritoneal implantation, when evaluated at necropsy 3 weeks later. (<b>B</b>) Endometriotic lesions in these animals also did not elicit a progressive fibrotic response as seen in <i>Klf11-/-</i> animals. Any adhesions in <i>Klf9-/-</i> animals (black arrow) were flimsy, transparent and peri-lesional in extent. (<b>C</b>) Tissue planes were unaltered with preservation of intra-abdominal anatomy. Consequently, intestinal length was not foreshortened due to lack of mesenteric fibrosis (unraveled intestinal loops denoted by white arrows). (<b>D</b>): A composite adhesion score for each mouse was determined and compared between <i>Klf11-/-</i>, <i>Klf9-/-</i> and wildtype genotypes, based on the Murine Adhesion Scoring System. The adhesion score for <i>Klf11-/-</i> mice (81.7±4.8) was significantly different from that calculated in either <i>Klf9-/-</i> (12.3±1.8) or wildtype animals (9.17±0.8); (* = p<0.05, 14 lesions/genotype). The scores objectively reflected observed anatomical findings in these animals.</p>