أرسل هذا في رسالة قصيرة: Heritability of children's prosocial behavior and differential susceptibility to parenting by variation in the dopamine receptor D4 gene

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