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Cellular and Molecular Biology

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Moderate

Endomembrane System Protein Trafficking

CELLS-ZVH2YS

Secretory protein (SP2), encoded by a nuclear gene, is constitutively secreted from cultured kidney hamster cells.

Given this fact, which of the following must be true of SP2? It is transiently found in

A

anterograde transition vesicles.

B

retrograde transition vesicles.

C

smooth ER.

D

lysosomes.