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A. Isolated strings of particles are specifically labeled by IFT antibodies. Gold particles have been indicated in this figure by arrowheads, without any distinction between complex A and complex B labeling. B. Both complex A (white arrows: IFT139, 5-nm gold) and complex B (black arrows: IFT46, 10-nm gold) antibodies react with IFT particle arrays. Brackets in both Figs. A and B indicate regions where particles are arranged in a double row.
