"The 'vanishing twin' is one cause of a condition where a person has two types of blood, which is known as chimerism. "
Awesome, just plain awesome. And the nerves of these drug cheats:
"Last week, the cyclist was still maintaining that the positive is a dreadful mistake, which has cost him more than a million dollars in lost earnings and legal fees. 'I am innocent and I believe in this process,' he said. "