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Internalization and colocalization of LFn-GFP with the proteosome 20s subunit is more efficient in the absence of PA. HeLa cells were stained for the proteosome 20s α-subunit 1 hr (a and b)or2hr(c and d) after incubation with LFn-GFP in the absence (a and c) or presence (b and d) of PA. (Right) Overlay. (Center) Red fluorescent staining for the proteosome. (Left) Green fluorescence of LFn-GFP.
