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Immunofluorescence microscopy of G protein and caveolin-1 colocalization. Bovine lung microvascular endothelial cells (BLMVEC) were fixed and incubated with antibodies, either to caveolin (left panel, red labeling) or to the indicated G proteins (middle panel, green labeling). Signal overlap for caveolin and G protein generates yellow in the overlay of the two images (right panel).
