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

hemoglobin synthesis
metabolism of homogentisic acid
insufficient thyroid production
collagen synthesis

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Protein Structure
Metastasis involves

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

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Protein Structure
Cyclins are proteins that

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

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