| abstract |
The present invention provides umbilical mesenchymal stem cell factor frozen powder, a manufacturing method, and its utilization, and at the same time collecting umbilical mesenchymal stem cell condition medium by this method, mannitol is used as a freeze-dried protective agent, and a non-dried method is used. Umbilical cord mesenchymal stem cell factor frozen powder prepared by lyophilization is beneficial for long-term and stable preservation and has good anti-aging effect. |