Cancer crusader, Mr Danny Whyte is dead. He died on Tuesday afternoon at a London hospital of Leukaemia, a disease he fought against for years.Mr. Whyte set up a Foundation - the Danny Whyte and the Ivor Burford Leukaemia Trust to encourage people to donate bone marrow to cancer patients.Mr Whyte was in critical condition and was being monitored ahead of an operation that might have saved his life.He died hours after family members said they found a bone marrow donor to save him.Leukaemia is a form of cancer that begins in the blood-forming cells of the bone marrow - the soft, inner part of the bones. Leukeamia - which literally means "white blood" in Greek - occurs when there is an excess of abnormal white blood cells in the blood. Known as leukocytes, these cells are so plentiful in some individuals that the blood actually has a whitish tinge.