Protein Structure
Marfan's syndrome is thought to be a mutation affecting

collagen synthesis
insufficient thyroid production
metabolism of homogentisic acid
hemoglobin synthesis

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Protein Structure
Metastasis involves

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

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Protein Structure
Cyclins are proteins that

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

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