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(A) Western blot of purified PIV5-N after proteolysis. Lane 1, molecular weight ladder. Lane 2, 2 μg of PIV5-N. (B) Electron microscopy of the purified PIV5-N protein shown in A. Top left inset magnifies one of the observed ring structures. (Scale bar, 50 nm for big box and 10 nm for Inset).
