Word: pericardium
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Dates: during 1980-1989
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Carson agonized over what material to use in constructing separate veins for the boys. Because brain sinuses are structurally different from veins elsewhere in the body, a vessel from the leg or another area would not do. Finally a colleague suggested a novel solution: using part of the pericardium, the membrane that surrounds the heart. "That was a fabulous idea," says Carson. "We knew we were going into the chest anyway. It was right there in front of us saying, 'Take...