the managing director of royan construction technology company said: iran it has the largest capacity of stem cells in the region. in the middle east, more than 50 patients with malignant blood diseases, including blood cancers , have been treated using umbilical cord blood stem cells and fortunately , their treatment has been successful . there are requests from other countries and neighboring countries to save we were also responsible for the construction of the umbilical cord house, so that now a significant number of examples of the umbilical cord house from other countries have been stored in iran. researchers have developed a new composite material that can repair broken bones to repair german scientists created this implantable material with a combination of glass and a biodegradable polymer. this material can be used to treat bones with high fracture severity and cause the growth of new bone tissue. the bioactive glass used in this material turns into a chemical compound like istekhan after it is finished with the body. the birth of an island . for the first time, a group of r