Nurturing Life Sciences
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#Unit 4. Cell Communication and Cell Signaling
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#Unit 6. System Physiology – Plant
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#Unit 2. Cellular Organization
Soft keratins, or cytokeratins, are found in epithelial cells and make up the skin.
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Promoter mutations are also cis-acting. If they prevent RNA polymerase from binding at P-lac, the structural genes are never transcribed.