Which ultrastructural feature would you expect to see in a cell that is highly active in secretion of glycosylated proteins (e.g., secretory epithelial cell)?
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Correct answer: Expanded rough ER and Golgi with many vesicles
Secretory cells typically have large amounts of rER for protein synthesis, a well-developed Golgi for post-translational modification (e.g., glycosylation) and many vesicles for secretion — features clearly visible on electron micrographs.
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