1 Membranes separate their contents from the environment. 2  Cell membranes separate the cell contents from its environment, and organelle membranes separate the organelle contents from their environment. 3  Membranes regulate the movement of materials through them.
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Company Profile. Amgen, Inc. is a biotechnology medicines company, which discovers, develops, manufactures and markets medicines for grievous illnesses. The company focuses on human therapeutics and concentrates on innovating novel medicines based on advances in cellular and molecular biology.