Fig. 2From: An ontogenetic approach to gynecologic malignanciesOrganogenesis. Weeks 3 to 8: Primordia require the interaction between mesoderm-derived mesenchyme (blue cells) and ecto/meso/endoderm-derived epithelium (black cells); each primordium acts as a metabolic field driven by molecular signal gradients, constrained by neighbouring primordia; Adult: In the adult, primordia have become different ontogenetic compartments, adjacent to each other due to spacial body constraints [15]Back to article page