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Figure F21. A. Total prokaryotic cells (solid circles) vs. depth. Short dashed line = global prokaryote profile (Parkes et al., 2000) (log10 cells = 8.03–0.66 × log10 depth [m]), long dashed lines = upper and lower prediction limits for this profile, vertical line = detection limit (5.2 log10 cells/cm3). B. Percentage of the total population involved in cell division (open circles) versus depth. C. Geochemical profiles of sulfate (solid squares) and methane (crossed squares). Upper horizontal line = base of Subunit 1A at 33.3 mbsf, lower horizontal line = erosional boundary at 81.7 mbsf.

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