Working at depth (IMAGE) Woods Hole Oceanographic Institution Caption At depth, the team utilized modified push cores, or injector cores, to infuse a portion of the samples with a preservative (visible with red dye). These were then brought to the surface for gene-expression analyses to determine their metabolic pathways. Credit Ocean Exploration Trust, NOAA Ocean Exploration, and NASA Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.