أرسل هذا في رسالة قصيرة: Use of Umbilical Cord Mesencymal Stem Cells in the Treatment of Severe COVID-19 Pneumonia

  _  _     ______   _____     _    _    _    _   
 | \| ||  /_   _// |  __ \\  | || | || | || | || 
 |  ' ||   -| ||-  | |  \ || | || | || | || | || 
 | .  ||   _| ||_  | |__/ || | \\_/ || | \\_/ || 
 |_|\_||  /_____// |_____//   \____//   \____//  
 `-` -`   `-----`   -----`     `---`     `---`