Endometriosis provides a unique clinical and scientific challenge. It is being diagnosed with increasing frequency and yet we are unsure of the significance of this in many patients. Its appearance varies from a tiny focus of disease to a potently destructive phenomenon. Weare still unsure of the relative value of medical or surgical treatment. The pathogenesis and control of the cellular function of the disease proVide many scientific problems. The presence of a comparative normal epithelium, namely endometrium, provides a unique research opportunity. It is probable that only through basic...