G3Ia and G3Ib continue to inhibit the formation of stress granules after 24 h of exposure to compounds. (A) Schematic showing the preincubation paradigm used in B. Indicated doses of the compound were added to cells for 24 h, followed by exposure to 500 μM NaAsO₂ stress for 30 min to monitor stress granule formation. (B) Shown are representative images of immunofluorescence staining of additional stress granule markers (eIF3η, PABPC1). Scale bars, 20 μm.