Sampling was performed by Drs. J.-C. AuClair and M.R. Twiss in association with Dr. M. Charlton and the CCIW .
Upper panel shows total protein resolved by electrophoresis followed by silver-staining.
Protein standards are located in the extreme left lane. Lower panel shows immunodetection of diatom flavodoxin using polyclonal antiserum. It is anticipated that bathymetry is, at least in part, responsible for this pattern of flavodoxin accumulation.