أرسل هذا في رسالة قصيرة: Gender-related differences in a process of the age-dependent alterations of the elements in monkey sino-atrial node

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