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| Fig. 1. Light and electron microscopic images of nanobacteria. (A) DIC image of bottom-attached nanobacteria after a 2-month culture period. (B) DNA staining of the same area (X1600) with the modified Hoechst method. (C) Negative staining of nanobacteria isolated directly from FBS. (Bar = 200 nm.) (D) SEM micrograph showing their variable size. (Bar = 1 µm.) (E) A dividing nanobacterium covered with a "hairy" apatite layer. (Bar = 100 nm.) Source: Kajander and Ciftcioglu 1998 (PNAS 95: 8274-8279). Copyright 1998 National Academy of Sciences, U.S.A. Used with permission. |