Tissue Science Laboratories plc (LSE:TSL), the medical devices company specialising in human tissue replacement and repair, announces further positive clinical results for its porcine-derived collagen product, Permacol(R) injection, as a Urethral Bulking Agent (UBA) in the treatment of Urinary Stress Incontinence (USI). USI is a common, distressing condition affecting 1 in 8 women over 45 and an estimated 11 million women in the US alone.