Arsenite-stressed cells. Immunofluorescence light micrograph of cells stained to show cell proteins and stress responses to arsenite. The image at left shows no stress, with the image at right showing stress due to arsenite (chemical compounds containing arsenic). The text at lower left gives the names of the proteins and the colours of their corresponding stains: HEDLS-GE-1 (green), YB1 (red, Y box binding protein 1), and RP0 (blue, ribosomal P0 protein). At right are inset images showing P-bodies (green, processing bodies containing RNA enzymes) and stress granules (red).