FIGURE 6. Images of bacteria frozen into Lake Vostok's accreted ice6.
From the following article:
Physical, chemical and biological processes in Lake Vostok and other Antarctic subglacial lakes
Martin J. Siegert, J. Cynan Ellis-Evans, Martyn Tranter, Christoph Mayer, Jean-Robert Petit, Andrey Salamatin and John C. Priscu
Nature 414, 603-609(6 December 2001)
doi:10.1038/414603a

a, Atomic force microscope image of a single bacteria, illustrating how bacteria can be identified using this device. b–d, Scanning electron microscope images showing the occurrence of rod-shaped bacteria (noted by arrows) within the accreted ice. The ice was sampled from the Vostok ice core at a depth of 3,590 m, which is about 151 m above the lake surface and 60 m below the glacial accreted ice boundary.
