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. 1998 Jul 27;142(2):319–329. doi: 10.1083/jcb.142.2.319

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R-rings recruit only certain antigens. Cells were transiently transfected with NoppR (A and B) and NoppΔN (C) to induce R-rings. The localization of fibrillarin (a), nucleolin (b), and p80 coilin (c) was detected with the respective antibodies, and was compared by indirect double immunofluorescence with that of the transfected constructs with HA-antibodies (a′–c′) and with the phase contrast images of the same fields of cells (a′′–c′′). Some R-rings (solid arrows) and coiled bodies (open arrows) are pointed out. Bar, 10 μm.