>The 81-year-old Australian has donated more than 1,100 times since turning 21. >Because his blood has unique disease-fighting antibodies, it is used to create

>The 81-year-old Australian has donated more than 1,100 times since turning 21. >Because his blood has unique disease-fighting antibodies, it is used to create an injection which combats rhesus disease – a condition where the blood of pregnant women attacks their unborn babies.