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

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

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Protein Structure
Cyclins are proteins that

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

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Protein Structure
Metastasis involves

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

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