Dr Lesley Walker, cancer Research UK's director of cancer information said: "as in most cancers, the cell that the cancer originates from has remained elusive in bowel cancer."

从事癌症信息学研究的英国癌症研究所的主任，Lesley Walker博士说：“正如大多数癌症一样，大肠癌中癌细胞的起源仍然不清楚。”

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In addition to Walker, five witnesses testified Thursday morning, including officials with cell phone companies and a computer forensic specialist for the Ohio Bureau of Investigation who testified about her analysis of the contents of 17 cell phones examined by police.

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