Biology / Bio 0307 · Atom · ~20 seconds
The Extracellular Matrix
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The extracellular matrix is secreted protein and carbohydrate, mainly collagen, that holds animal cells into tissue and lets them communicate.
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A matrix molecule binding a cell-surface receptor can trigger a signal that reaches the nucleus and switches specific genes on or off.
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The matrix sits outside the plasma membrane — secreted material, not part of the cell itself.
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