Cells

Smooth ER, which lacks ribosomes, produces different molecules in different cells. It is abundant in the testes and adrenal cortex, both of which produce steroid hormones. In the liver, smooth ER is involved in the detoxification of drugs, including alcohol.
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The Golgi apparatus is composed of a stack of about a half dozen or more saccules (flattened vacuoles, which
look like hollow pancakes). One side of the stack, called the inner face, is directed toward the nucleus and the
ER. The other side of the stack, called the outer face, is directed toward the cell membrane.
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