Protein Structure
Over 50% of common cancers are associated with damage to a protein, p53. This protein

regulates apoptosis
is a tumor supressor
is an oncogene
is a cyclin

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Protein Structure
Metastasis involves

All of these
decreased levels of proteins that regulate metalloproteins
ability of cells to dissolve cellular matrix
metalloprotein levels

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Protein Structure
Cyclins are proteins that

regulate apoptosis of damaged cells
None of these
regulate passage from one stage of cell division to another
regulate ability of cells to invade tissue

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