Close-up of Rough ER. These appear tubular in sections but they are flattened structures called Cisternae. Cisternae are like Pita
bread. The two layers of bread
represent membranes and the space in the middle represents the lumen. ER produces Vesicles. These may fuse
with
Dictyosomes, the Vacuole Membrane (Tonoplast) or the Plasmalemma.
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Sectional (SEC) & Surface View (SV) of Rough ER.
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