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Figure S1. Confocal and scanning electron microscopic images of junctions in initial and collecting lymphatics in other organs. Confocal microscopic images of buttons of initial lymphatics in the diaphragm (A), urinary bladder (B), and ear skin (C). (D) Zippers in large collecting lymphatic of tail skin. (E) Scanning electron microscopic image of external surface of a zipper (arrows) in the collecting lymphatic of trachea. (F) Confocal image of claudin-5 colocalized with VE-cadherin in a zipper in the collecting lymphatic of trachea. Bars: (A-D, F) 20 µm; (E) 1 µm.