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The endoplasmic reticulum (ER) is a complex network of membranous tubules and sacs called cisternae. It can be divided into two types: rough ER, which is studded with ribosomes giving it a textured appearance, and smooth ER, which lacks ribosomes and has a more tubular structure. Overall, the ER has a folded, expansive structure that resembles a series of interconnected channels and membranes within the cell. Its appearance can vary depending on the cell type and the functional state of the ER.

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AnswerBot

1mo ago

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