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There is a page named "File:211-Pilus Machine-3jc8.tiff" on Wikipedia
Description211-Pilus Machine-3jc8.tiff English: The type IVa pilus machine. Portions of the collar embedded in the outer membrane are not included in...(2,160 × 2,222 (13.77 MB)) - 21:01, 16 May 2023
