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. 2003 Oct;185(20):6112–6118. doi: 10.1128/JB.185.20.6112-6118.2003

FIG. 8.

FIG. 8.

An image of the PAO1 envelope (similar to that of K-12 depicted in Fig. 7). The cell was grown on Trypticase soy agar and processed in 20% (wt/vol) dextran for high-pressure freezing. This high-magnification view of the envelope shows OM (short arrow) asymmetry in comparison to that of the PM (long arrow). The periplasmic space appears wider in comparison to the other images, which might be due to the growth of the cells on solid medium or to the presence of dextran as the cryoprotectant. Bar, 50 nm.