Figure F11. Profile of total prokaryotic cells at Holes 1227D (upper datum) and 1227A (rest of data). Heavy dashed line is a regression line derived from previous ODP legs and updated from Parkes et al. (1994) (log10 cells = 8.03 - 0.66 log10 depth); lighter dashed lines are the ±2- envelopes of cell concentrations from previously censused ODP sites.