Initial Reports Volume 187 Chapter 5, Table T2. Rock samples incubated for enrichment cultures and prepared for DNA analysis and electron microscope studies and microspheres evaluated for contamination studies. Notes: SEM = scanning electron microscope; TEM = transmission electron microscopy; * = contamination test; X = samples prepared on board. Depth Enrichment cultures DNA analysis SEM/TEM samples Microspheres* Core (mbsf) Sample type Anaerobic Aerobic High pressure Wash Fixed Air dried Exterior Interior 187-1154A- 3R-1 237.31 Rock 10 3 X X Yes Yes 6R-1 251.89 Rock 8 4 X X X Yes Yes 9R-1 265.91 Rock 8 4 X X X X Yes No