12-year-old Marius Schneider of southern Germany has cystic fibrosis, which caused him to have respiratory problems.

--He was on the organ transplant list, waiting for new lungs . . . but his breathing got worse.  On Friday, April 13th, he had to be put on a ventilator and a heart-lung machine.      

--That's when his parents, Lars and Anja, got sick of waiting.  Both of them had the same blood type as Marius . . . and both of them had larger lungs than their son.    

--Those are the two requirements for a transplant . . . so Lars and Anja EACH donated one lung to save their son's life.

--Surgeons used three operating rooms to do the double-transplant in April.  The surgery took six hours, and Marius spent 155 days in the hospital afterward.

--He finally got to go home this month . . . and, while his immune system is still weak, he can play soccer and ride his bike.