أرسل هذا في رسالة قصيرة: Decreased levels of matrix metalloproteinase-2 in root-canal exudates during root canal treatment

           _    _     ______   __   __     _____  
    ___   | || | ||  /_   _//  \ \\/ //   / ___// 
   /   || | || | ||    | ||     \ ` //    \___ \\ 
  | [] || | \\_/ ||   _| ||      | ||     /    // 
   \__ ||  \____//   /__//       |_||    /____//  
    -|_||   `---`    `--`        `-`'   `-----`   
     `-`