SAN DIEGO, CA (MARKET WIRE) Medistem Inc. (PINKSHEETS: MEDS). Medistem collaborator Dr. Jorge Paz Rodriquez was invited to give a talk at Del Mar College in Texas by arthritis patient Dusty Durrill. The patient described a profound recovery after treatment with stem cells from his own fat tissue. Mr Durrill underwent a procedure in which a small amount of fat tissue was extracted by liposuction, stem cells where purified, and subsequently injected intravenously.