Assertion: tumor's cell | /r/CapableOf | become defective
Facets:
Source sentences:
text: In a cancer cell, several genes change (mutate) and the cell becomes defective.
text: One theory suggests that the cells in the bone marrow, the stem cells, become damaged or defective, so when they reproduce to make more cells, they make abnormal cells or cancer cells.
text: One theory suggests that the cells in the bone marrow, the stem cells, become damaged or defective, so when they reproduce to make more cells, they make abnormal cells or cancer cells.