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Fig. 2 | BMC Microbiology

Fig. 2

From: Comparative gene expression analysis of planktonic Porphyromonas gingivalis ATCC 33277 in the presence of a growing biofilm versus planktonic cells

Fig. 2

Representative confocal micrographs of P. gingivalis depicting 2D maximum projection images after 96 h of incubation of the two experimental groups designed, (a) planktonic P. gingivalis cells growing in a pure planktonic environment and (b) free-floating P. gingivalis cells placed in the presence of a P. gingivalis mono-species biofilm. Image (c) corroborate the absence of sessile phenotype on the bottom of the plate of control group samples, only faint debris could be observed adhered. Image (d) shows a sessile phenotype evolved on the surface of hydroxyapatite discs form the test group. Specimens were stained with Syto9 fluorochrome (Molecular Probes B. V., Leiden, The Netherlands)

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